diff --git a/net-view/operation/private/nethotspotcontroller.cpp b/net-view/operation/private/nethotspotcontroller.cpp
index c9dc6ac52..9cdae0e74 100644
--- a/net-view/operation/private/nethotspotcontroller.cpp
+++ b/net-view/operation/private/nethotspotcontroller.cpp
@@ -8,8 +8,10 @@
 #include <NetworkManagerQt/Settings>
 #include <NetworkManagerQt/WirelessSecuritySetting>
 #include <NetworkManagerQt/WirelessSetting>
+
 #include <hotspotcontroller.h>
 #include <networkcontroller.h>
+#include <netutils.h>
 #include <wirelessdevice.h>
 
 namespace dde {
@@ -186,6 +188,14 @@ void NetHotspotController::updateConfig()
         config.insert(it.key(), it.value());
     }
     QVariantMap typeMap = config["802-11-wireless"].value<QVariantMap>();
+    // ssid 在 NM 侧是原始字节(可能 GBK 编码),转为 UTF-8 字符串后交给 UI 显示,
+    // 避免 QML 按 UTF-8 直读 QByteArray 产生乱码(参考 nm_utils_ssid_to_utf8 语义)
+    QByteArray rawSsid;
+    if (typeMap.contains("ssid")) {
+        rawSsid = typeMap.value("ssid").toByteArray();
+        if (!rawSsid.isEmpty())
+            typeMap["ssid"] = ssidToUtf8(rawSsid);
+    }
     typeMap.insert("optionalDevice", m_optionalDevice);
     config["802-11-wireless"] = typeMap;
     m_config = config;
diff --git a/net-view/operation/private/netmanagerthreadprivate.cpp b/net-view/operation/private/netmanagerthreadprivate.cpp
index 15c527f9c..53d18977e 100644
--- a/net-view/operation/private/netmanagerthreadprivate.cpp
+++ b/net-view/operation/private/netmanagerthreadprivate.cpp
@@ -20,6 +20,8 @@
 #include "private/vpnparameterschecker.h"
 #include "wireddevice.h"
 #include "wirelessdevice.h"
+#include <netutils.h>
+
 
 #include <NetworkManagerQt/AccessPoint>
 #include <NetworkManagerQt/Ipv6Setting>
@@ -717,7 +719,7 @@ void NetManagerThreadPrivate::doConnectHidden(const QString &id, const QString &
     if (!wirelessDevice)
         return;
     NetWirelessConnect wConnect(wirelessDevice, nullptr, this);
-    wConnect.setSsid(ssid);
+    wConnect.setRawSsid(ssid.toUtf8());
     wConnect.initConnection();
     wConnect.connectNetwork();
 }
@@ -779,7 +781,7 @@ void NetManagerThreadPrivate::doConnectWireless(const QString &id, const QVarian
         return;
     }
     NetWirelessConnect wConnect(wirelessDevice, ap, this);
-    wConnect.setSsid(ap->ssid());
+    wConnect.setRawSsid(ap->rawSsid());
     wConnect.initConnection();
     QString secret = wConnect.needSecrets();
 
@@ -954,9 +956,8 @@ void NetManagerThreadPrivate::doConnectOrInfo(const QString &id, NetType::NetIte
         ConnectionSettings::Ptr settings;
         for (const NetworkManager::Connection::Ptr &con : netDevice->availableConnections()) {
             NetworkManager::WirelessSetting::Ptr wSetting = con->settings()->setting(NetworkManager::Setting::SettingType::Wireless).staticCast<NetworkManager::WirelessSetting>();
-            if (wSetting->ssid() != ap->ssid()) {
+            if (!ssidBytesMatch(wSetting->ssid(), ap->rawSsid(), ap->ssid()))
                 continue;
-            }
             settings = con->settings();
 
             WirelessSecuritySetting::Ptr const sSetting = settings->setting(Setting::SettingType::WirelessSecurity).staticCast<WirelessSecuritySetting>();
@@ -980,7 +981,7 @@ void NetManagerThreadPrivate::doConnectOrInfo(const QString &id, NetType::NetIte
                 NetworkManager::ConnectionSettings::Ptr settings = NetworkManager::ConnectionSettings::Ptr(new ConnectionSettings(ConnectionSettings::Wireless));
                 settings->setId(ap->ssid());
                 NetworkManager::WirelessSetting::Ptr wSetting = settings->setting(Setting::SettingType::Wireless).staticCast<WirelessSetting>();
-                wSetting->setSsid(ap->ssid().toUtf8());
+                wSetting->setSsid(ssidForSave(ap->rawSsid(), ap->ssid()));
                 wSetting->setInitialized(true);
                 WirelessSecuritySetting::Ptr wsSetting = settings->setting(Setting::WirelessSecurity).dynamicCast<WirelessSecuritySetting>();
                 switch (keyMgmt) {
@@ -1186,9 +1187,8 @@ void NetManagerThreadPrivate::doGetConnectInfo(const QString &id, NetType::NetIt
         ConnectionSettings::Ptr settings;
         for (const NetworkManager::Connection::Ptr &con : netDevice->availableConnections()) {
             NetworkManager::WirelessSetting::Ptr wSetting = con->settings()->setting(NetworkManager::Setting::SettingType::Wireless).staticCast<NetworkManager::WirelessSetting>();
-            if (wSetting->ssid() != ap->ssid()) {
+            if (!ssidBytesMatch(wSetting->ssid(), ap->rawSsid(), ap->ssid()))
                 continue;
-            }
             settings = con->settings();
 
             WirelessSecuritySetting::Ptr sSetting = settings->setting(Setting::SettingType::WirelessSecurity).staticCast<WirelessSecuritySetting>();
@@ -1283,7 +1283,7 @@ void NetManagerThreadPrivate::doGetConnectInfo(const QString &id, NetType::NetIt
             NetworkManager::ConnectionSettings::Ptr settings = NetworkManager::ConnectionSettings::Ptr(new ConnectionSettings(ConnectionSettings::Wireless));
             settings->setId(ap->ssid());
             NetworkManager::WirelessSetting::Ptr wSetting = settings->setting(Setting::SettingType::Wireless).staticCast<WirelessSetting>();
-            wSetting->setSsid(ap->ssid().toUtf8());
+            wSetting->setSsid(ssidForSave(ap->rawSsid(), ap->ssid()));
             wSetting->setHidden(hidden);
             wSetting->setInitialized(true);
             WirelessSecuritySetting::Ptr wsSetting = settings->setting(Setting::WirelessSecurity).dynamicCast<WirelessSecuritySetting>();
@@ -2176,7 +2176,8 @@ void NetManagerThreadPrivate::addNetwork(const NetworkDeviceBase *device, QList<
             NetworkManager::WirelessSetting::Ptr wirelessSetting = connection->settings()->setting(NetworkManager::Setting::SettingType::Wireless).dynamicCast<NetworkManager::WirelessSetting>();
             if (wirelessSetting.isNull())
                 return false;
-            return wirelessSetting->ssid() == ap->ssid() && !connection->isUnsaved();
+            return ssidBytesMatch(wirelessSetting->ssid(), ap->rawSsid(), ap->ssid())
+                && !connection->isUnsaved();
         });
         item->updatehasConnection(itConnection != connections.end());
         Q_EMIT itemAdded(device->path(), item);
@@ -2290,7 +2291,8 @@ void NetManagerThreadPrivate::onAvailableConnectionsChanged()
                 NetworkManager::WirelessSetting::Ptr wirelessSetting = connection->settings()->setting(NetworkManager::Setting::SettingType::Wireless).dynamicCast<NetworkManager::WirelessSetting>();
                 if (wirelessSetting.isNull())
                     return false;
-                return wirelessSetting->ssid() == tmpAp->ssid() && !connection->isUnsaved();
+                return ssidBytesMatch(wirelessSetting->ssid(), tmpAp->rawSsid(), tmpAp->ssid())
+                    && !connection->isUnsaved();
             });
             if (itConnection != connections.end()) {
                 availableAccessPoints.append(apID(tmpAp));
@@ -2811,7 +2813,8 @@ void NetManagerThreadPrivate::updateHiddenNetworkConfig(WirelessDevice *wireless
                 NetworkManager::WirelessSecuritySetting::Ptr const wsSetting = connSettings->setting(NetworkManager::Setting::SettingType::WirelessSecurity).staticCast<NetworkManager::WirelessSecuritySetting>();
                 if ((wsSetting) && NetworkManager::WirelessSecuritySetting::KeyMgmt::Unknown == wsSetting->keyMgmt()) {
                     for (auto *ap : wireless->accessPointItems()) {
-                        if (ap->ssid() == wSetting->ssid() && ap->secured() && ap->strength() > 0) {
+                        if (ssidBytesMatch(wSetting->ssid(), ap->rawSsid(), ap->ssid())
+                                && ap->secured() && ap->strength() > 0) {
                             handleAccessPointSecure(ap);
                         }
                     }
@@ -2957,7 +2960,7 @@ void NetManagerThreadPrivate::handleAccessPointSecure(AccessPoints *accessPoint)
             return;
 
         NetWirelessConnect wConnect(dynamic_cast<WirelessDevice *>(*it), accessPoint, this);
-        wConnect.setSsid(accessPoint->ssid());
+        wConnect.setRawSsid(accessPoint->rawSsid());
         wConnect.initConnection();
         QVariantMap param;
         param.insert("secrets", { wConnect.needSecrets() });
@@ -3057,7 +3060,7 @@ void NetManagerThreadPrivate::onPortalDetected(const QString &portalUrl)
         dde::network::WirelessDevice *wirelessDevice = static_cast<dde::network::WirelessDevice *>(networkDevice);
         // 找到无线连接对应那个网络
         for (dde::network::AccessPoints *ap : wirelessDevice->accessPointItems()) {
-            if (ap->ssid() != wirelessSetting->ssid())
+            if (!ssidBytesMatch(wirelessSetting->ssid(), ap->rawSsid(), ap->ssid()))
                 continue;
 
             Q_EMIT dataChanged(DataChanged::portalUrlChanged, apID(ap), portalUrl);
diff --git a/net-view/operation/private/netwirelessconnect.cpp b/net-view/operation/private/netwirelessconnect.cpp
index de9a903fa..c553a8766 100644
--- a/net-view/operation/private/netwirelessconnect.cpp
+++ b/net-view/operation/private/netwirelessconnect.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -6,6 +6,7 @@
 
 #include "configsetting.h"
 #include "nmnetworkmanager.h"
+#include <netutils.h>
 
 #include <NetworkManagerQt/AccessPoint>
 #include <NetworkManagerQt/ActiveConnection>
@@ -38,9 +39,9 @@ NetWirelessConnect::NetWirelessConnect(dde::network::WirelessDevice *device, dde
 
 NetWirelessConnect::~NetWirelessConnect() = default;
 
-void NetWirelessConnect::setSsid(const QString &ssid)
+void NetWirelessConnect::setRawSsid(const QByteArray &rawSsid)
 {
-    m_ssid = ssid;
+    m_rawSsid = rawSsid;
     m_connectionSettings.clear();
 }
 
@@ -187,12 +188,12 @@ bool NetWirelessConnect::initConnection()
     if (m_accessPoint) {
         NetworkManager::Connection::Ptr conn;
         for (const ActiveConnection::Ptr &con : NetworkManager::activeConnections()) {
-            if (con->type() != ConnectionSettings::ConnectionType::Wireless || con->id() != m_ssid)
+            if (con->type() != ConnectionSettings::ConnectionType::Wireless)
                 continue;
 
             NetworkManager::ConnectionSettings::Ptr connSettings = con->connection()->settings();
             NetworkManager::WirelessSetting::Ptr wSetting = connSettings->setting(NetworkManager::Setting::SettingType::Wireless).staticCast<NetworkManager::WirelessSetting>();
-            if (wSetting.isNull())
+            if (wSetting.isNull() || wSetting->ssid() != m_rawSsid)
                 continue;
 
             QString settingMacAddress = wSetting->macAddress().toHex().toUpper();
@@ -208,7 +209,7 @@ bool NetWirelessConnect::initConnection()
             // 如果找到的conn是空的,当前的setting也需要重置
             m_connectionSettings.reset();
             for (auto item : m_device->items()) {
-                if (item->connection()->ssid() != m_ssid)
+                if (item->connection()->ssid() != m_rawSsid)
                     continue;
 
                 QString uuid = item->connection()->uuid();
@@ -237,11 +238,12 @@ bool NetWirelessConnect::initConnection()
             uuid.replace(24, QString::number(second).length(), QString::number(second));
         }
         m_connectionSettings->setUuid(uuid);
-        m_connectionSettings->setId(m_ssid);
+        QString ssid = ssidToUtf8(m_rawSsid);
+        m_connectionSettings->setId(ssid);
         if (!m_accessPoint) {
             m_connectionSettings->setting(Setting::SettingType::Wireless).staticCast<WirelessSetting>()->setHidden(true);
         }
-        qCInfo(DNC) << "Wireless connect init, create connect: ssid: " << m_ssid << ", uuid: " << uuid << ", access point: " << m_accessPoint;
+        qCInfo(DNC) << "Wireless connect init, create connect: ssid: " << ssid << ", uuid: " << uuid << ", access point: " << m_accessPoint;
         if (m_accessPoint) {
             WirelessSecuritySetting::Ptr wsSetting = m_connectionSettings->setting(Setting::WirelessSecurity).dynamicCast<WirelessSecuritySetting>();
             WirelessSecuritySetting::KeyMgmt keyMgmt = getKeyMgmtByAp(m_accessPoint);
@@ -261,7 +263,9 @@ bool NetWirelessConnect::initConnection()
             }
         }
         WirelessSetting::Ptr const wirelessSetting = m_connectionSettings->setting(Setting::Wireless).dynamicCast<WirelessSetting>();
-        wirelessSetting->setSsid(m_ssid.toUtf8());
+        // 优先保存 AP 原始字节(与 NM 字节匹配一致),rawSsid 为空(如隐藏网络)时回退 UTF-8
+        const QByteArray rawSsid = m_accessPoint ? m_accessPoint->rawSsid() : QByteArray();
+        wirelessSetting->setSsid(ssidForSave(rawSsid, m_rawSsid));
         wirelessSetting->setInitialized(true);
         m_needUpdate = true;
         if (m_needIdentify) {
diff --git a/net-view/operation/private/netwirelessconnect.h b/net-view/operation/private/netwirelessconnect.h
index de3deb91e..253a6dc1f 100644
--- a/net-view/operation/private/netwirelessconnect.h
+++ b/net-view/operation/private/netwirelessconnect.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -27,7 +27,7 @@ class NetWirelessConnect : public QObject
     explicit NetWirelessConnect(dde::network::WirelessDevice *device, dde::network::AccessPoints *ap, QObject *parent = nullptr);
     ~NetWirelessConnect() Q_DECL_OVERRIDE;
 
-    void setSsid(const QString &ssid);
+    void setRawSsid(const QByteArray &rawSsid);
     bool initConnection();
 
     bool passwordIsValid(const QString &password);
@@ -53,7 +53,7 @@ public Q_SLOTS:
 private:
     dde::network::WirelessDevice *m_device;
     dde::network::AccessPoints *m_accessPoint;
-    QString m_ssid;
+    QByteArray m_rawSsid;
     bool m_needUpdate;
     bool m_needIdentify;
 
diff --git a/src/impl/netinterface.h b/src/impl/netinterface.h
index 4f208b6bb..21fe070c1 100644
--- a/src/impl/netinterface.h
+++ b/src/impl/netinterface.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -189,6 +189,7 @@ class AccessPointProxy : public QObject
     virtual ConnectionStatus status() const = 0;                                // 当前网络的连接状态
     virtual bool hidden() const = 0;                                            // 是否为隐藏网络
     virtual bool isWlan6() const = 0;
+    virtual QByteArray rawSsid() const { return QByteArray(); }                    // 网络SSID原始字节，用于与NM侧连接字节精确匹配
 
 Q_SIGNALS:
     void strengthChanged(const int);                                            // 当前信号强度变化
diff --git a/src/impl/networkmanager/accesspointproxynm.cpp b/src/impl/networkmanager/accesspointproxynm.cpp
index 06363fd7d..c8ff1f8aa 100644
--- a/src/impl/networkmanager/accesspointproxynm.cpp
+++ b/src/impl/networkmanager/accesspointproxynm.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2023 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -57,9 +57,21 @@ bool AccessPointProxyNM::contains(const QString &uni) const
 
 QString AccessPointProxyNM::ssid() const
 {
+    // 用原始字节做 locale 感知解码(对齐 nm_utils_ssid_to_utf8),避免依赖上游 qt6 的 fromUtf8
+    const QByteArray raw = rawSsid();
+    if (!raw.isEmpty())
+        return ssidToUtf8(raw);
     return m_network->ssid();
 }
 
+QByteArray AccessPointProxyNM::rawSsid() const
+{
+    if (m_network.isNull() || m_network->referenceAccessPoint().isNull())
+        return QByteArray();
+
+    return m_network->referenceAccessPoint()->rawSsid();
+}
+
 int AccessPointProxyNM::strength() const
 {
     return m_strength;
@@ -134,7 +146,7 @@ void AccessPointProxyNM::initState()
     if (wirelessSetting.isNull())
         return;
 
-    if (wirelessSetting->ssid() != m_network->ssid())
+    if (!ssidBytesMatch(wirelessSetting->ssid(), rawSsid(), ssid()))
         return;
 
     updateStatus(convertStateFromNetworkManager(activeConnection->state()));
@@ -180,8 +192,7 @@ void AccessPointProxyNM::updateHiddenInfo()
         NetworkManager::WirelessSetting::Ptr wirelessSetting = connection->settings()->setting(NetworkManager::Setting::SettingType::Wireless).dynamicCast<NetworkManager::WirelessSetting>();
         if (wirelessSetting.isNull())
             return false;
-
-        return wirelessSetting->ssid() == m_network->ssid();
+        return ssidBytesMatch(wirelessSetting->ssid(), rawSsid(), ssid());
     });
     // 如果没有找到连接，就是非隐藏网络
     if (itConnection == connections.end())
diff --git a/src/impl/networkmanager/accesspointproxynm.h b/src/impl/networkmanager/accesspointproxynm.h
index aa06dfaad..fc6a43d28 100644
--- a/src/impl/networkmanager/accesspointproxynm.h
+++ b/src/impl/networkmanager/accesspointproxynm.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2023 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -39,6 +39,7 @@ class AccessPointProxyNM : public AccessPointProxy
     ConnectionStatus status() const override;
     bool hidden() const override;
     bool isWlan6() const override;
+    QByteArray rawSsid() const override;
     void updateStrengthFromActiveAp(int strength);
 
 private:
diff --git a/src/impl/networkmanager/devicemanagerrealize.cpp b/src/impl/networkmanager/devicemanagerrealize.cpp
index 22cd90b9b..4e0d127dc 100644
--- a/src/impl/networkmanager/devicemanagerrealize.cpp
+++ b/src/impl/networkmanager/devicemanagerrealize.cpp
@@ -761,7 +761,7 @@ void WirelessDeviceManagerRealize::connectNetwork(const AccessPoints *accessPoin
                 if (wSetting.isNull())
                     return false;
 
-                return wSetting->ssid() == accessPoint->ssid();
+                return ssidBytesMatch(wSetting->ssid(), accessPoint->rawSsid(), accessPoint->ssid());
             });
 
     if (itConnection == availableConnections.end()) {
@@ -780,7 +780,7 @@ void WirelessDeviceManagerRealize::connectNetwork(const AccessPoints *accessPoin
             if (!configMacAddress.isEmpty() && configMacAddress != realHwAdr().remove(":"))
                 continue;
 
-            if (wSetting->ssid() == accessPoint->ssid()) {
+            if (ssidBytesMatch(wSetting->ssid(), accessPoint->rawSsid(), accessPoint->ssid())) {
                 currentConnection = connection;
                 break;
             }
@@ -817,7 +817,7 @@ void WirelessDeviceManagerRealize::connectNetwork(const AccessPoints *accessPoin
         }
 
         NetworkManager::WirelessSetting::Ptr wirelessSetting = settings->setting(NetworkManager::Setting::Wireless).dynamicCast<NetworkManager::WirelessSetting>();
-        wirelessSetting->setSsid(accessPoint->ssid().toUtf8());
+        wirelessSetting->setSsid(ssidForSave(accessPoint->rawSsid(), accessPoint->ssid()));
         QString macAddress = m_device->permanentHardwareAddress();
         macAddress.remove(":");
         wirelessSetting->setMacAddress(QByteArray::fromHex(macAddress.toUtf8()));
@@ -1019,7 +1019,7 @@ AccessPointProxyNM *WirelessDeviceManagerRealize::findAccessPoints(NetworkManage
         return nullptr;
 
     const auto itAccessPoint = std::find_if(m_accessPointInfos.cbegin(), m_accessPointInfos.cend(), [wirelessSetting](AccessPointInfo *accessPoint) {
-        return accessPoint->accessPoint()->ssid() == wirelessSetting->ssid();
+        return ssidBytesMatch(wirelessSetting->ssid(), accessPoint->accessPoint()->rawSsid(), accessPoint->accessPoint()->ssid());
     });
 
     return itAccessPoint == m_accessPointInfos.cend() ? nullptr : (*itAccessPoint)->proxy();
@@ -1047,9 +1047,7 @@ void WirelessDeviceManagerRealize::onStateChanged(NetworkManager::ActiveConnecti
             }
             conn->save();
         }
-        connect(conn.data(), &NetworkManager::Connection::unsavedChanged, this, [this] {
-            Q_EMIT activeConnectionChanged();
-        }, Qt::UniqueConnection);
+        connect(conn.data(), &NetworkManager::Connection::unsavedChanged, this, &WirelessDeviceManagerRealize::activeConnectionChanged, Qt::UniqueConnection);
     }
 
     activeAp->updateStatus(convertStateFromNetworkManager(state));
@@ -1097,7 +1095,17 @@ bool WirelessDeviceManagerRealize::hotspotEnabled()
 void WirelessDeviceManagerRealize::addNetwork(const NetworkManager::WirelessNetwork::Ptr &network)
 {
     // 在当前的网络列表中查找同名SSID的网络，如果查找到了，就更新数据，没有查找到，就新增一条网络
-    QList<AccessPointInfo *>::iterator itApInfo = std::find_if(m_accessPointInfos.begin(), m_accessPointInfos.end(), [ network ](AccessPointInfo *accessPoint) { return accessPoint->accessPoint()->ssid() == network->ssid(); });
+    // GBK SSID 下上游 network->ssid() 是 mojibake，与本端显示名(ssidToUtf8)不一致，
+    // 因此按原始字节匹配：上游 referenceAccessPoint()->rawSsid() vs 本端 AccessPoints::rawSsid()
+    const QByteArray netRawSsid = network->referenceAccessPoint().isNull()
+            ? QByteArray()
+            : network->referenceAccessPoint()->rawSsid();
+    QList<AccessPointInfo *>::iterator itApInfo = std::find_if(m_accessPointInfos.begin(), m_accessPointInfos.end(), [ &netRawSsid, network ](AccessPointInfo *accessPoint) {
+        const QByteArray apRawSsid = accessPoint->accessPoint()->rawSsid();
+        if (!apRawSsid.isEmpty() && !netRawSsid.isEmpty())
+            return apRawSsid == netRawSsid;
+        return accessPoint->accessPoint()->ssid() == network->ssid();
+    });
     if (itApInfo == m_accessPointInfos.end()) {
         // 新增的无线网络
         AccessPointInfo *apInfo = new AccessPointInfo(m_device, network);
@@ -1142,13 +1150,32 @@ void WirelessDeviceManagerRealize::onNetworkAppeared(const QString &ssid)
 
 void WirelessDeviceManagerRealize::onNetworkDisappeared(const QString &ssid)
 {
-    // 查找移除的网络
+    // 不再依赖上游 networkDisappeared 的 ssid 参数做匹配（该参数是上游解码后的显示名，
+    // 在 GBK SSID 下与 AP 原始字节/本端显示名均不一致，且随上游 KF6 解码实现变化），
+    // 改为「上游存活 WirelessNetwork 的 rawSsid 集合」与「本端 m_accessPointInfos 的 rawSsid」做差集，
+    // 不在存活集合中的项即为已消失的网络。
+    Q_UNUSED(ssid);
+
+    // 1. 收集上游当前存活的 WirelessNetwork 的 rawSsid 字节集合
+    QSet<QByteArray> aliveRawSsids;
+    for (const NetworkManager::WirelessNetwork::Ptr &net : m_device->networks()) {
+        const NetworkManager::AccessPoint::Ptr refAp = net->referenceAccessPoint();
+        if (!refAp.isNull())
+            aliveRawSsids.insert(refAp->rawSsid());
+    }
+
+    // 2. 本端列表中 rawSsid 不在存活集合里的 → 删除；rawSsid 为空(隐藏网络)时回退显示名比对
     QList<AccessPointInfo *> removeAccessPoints;
     for (AccessPointInfo *apInfo : m_accessPointInfos) {
-        if (apInfo->accessPoint()->ssid() != ssid)
+        const QByteArray raw = apInfo->accessPoint()->rawSsid();
+        if (raw.isEmpty()) {
+            if (apInfo->accessPoint()->ssid() == ssid)
+                removeAccessPoints << apInfo;
             continue;
+        }
 
-        removeAccessPoints << apInfo;
+        if (!aliveRawSsids.contains(raw))
+            removeAccessPoints << apInfo;
     }
 
     if (removeAccessPoints.size() == 0)
diff --git a/src/impl/serviceinter/accesspointsproxyinter.cpp b/src/impl/serviceinter/accesspointsproxyinter.cpp
index cf3055f8d..1cc988e39 100644
--- a/src/impl/serviceinter/accesspointsproxyinter.cpp
+++ b/src/impl/serviceinter/accesspointsproxyinter.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2023 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -23,6 +23,20 @@ QString AccessPointsProxyInter::ssid() const
     return m_json.value("Ssid").toString();
 }
 
+QByteArray AccessPointsProxyInter::rawSsid() const
+{
+    // DSS 服务目前仅下发显示用的 Ssid 字符串，未提供原始字节；
+    // 若服务端未来提供 RawSsid（base64）字段，在此解析返回。
+    if (m_json.contains("RawSsid")) {
+        return QByteArray::fromBase64(m_json.value("RawSsid").toString().toLatin1());
+    }
+    if (m_json.contains("Ssid")) {
+        return m_json.value("Ssid").toString().toUtf8();
+    }
+
+    return QByteArray();
+}
+
 int AccessPointsProxyInter::strength() const
 {
     if (m_json.isEmpty())
diff --git a/src/impl/serviceinter/accesspointsproxyinter.h b/src/impl/serviceinter/accesspointsproxyinter.h
index 7d18d39ef..6509aa3a6 100644
--- a/src/impl/serviceinter/accesspointsproxyinter.h
+++ b/src/impl/serviceinter/accesspointsproxyinter.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2023 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -33,6 +33,7 @@ class AccessPointsProxyInter : public AccessPointProxy
     ConnectionStatus status() const override;
     bool hidden() const override;
     bool isWlan6() const override;
+    QByteArray rawSsid() const override;
 
 private:
     QString m_devicePath;
diff --git a/src/impl/serviceinter/deviceinterrealize.cpp b/src/impl/serviceinter/deviceinterrealize.cpp
index 140252c7a..7da636af6 100644
--- a/src/impl/serviceinter/deviceinterrealize.cpp
+++ b/src/impl/serviceinter/deviceinterrealize.cpp
@@ -725,7 +725,7 @@ WirelessConnection *WirelessDeviceInterRealize::findConnectionByAccessPoint(cons
         if (connection->accessPoints() == accessPoint)
             return connection;
 
-        if (connection->connection()->ssid() == accessPoint->ssid())
+        if (connection->connection()->ssid() == accessPoint->rawSsid())
             return connection;
     }
 
diff --git a/src/netutils.cpp b/src/netutils.cpp
index 60aa0e5e4..ef8873d3a 100644
--- a/src/netutils.cpp
+++ b/src/netutils.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -6,10 +6,152 @@
 
 #include <QMetaType>
 #include <QDBusMetaType>
+#include <QLocale>
+#include <QStringDecoder>
 
 namespace dde {
 namespace network {
 
+namespace {
+
+// 语言 → 候选编码(合并 nm_utils.c 的 5 位/2 位语言表,顺序贴近)
+QStringList langEncodings(const QLocale &l)
+{
+    if (l.language() == QLocale::Chinese) {
+        switch (l.territory()) {
+        case QLocale::HongKong:
+        case QLocale::Macau:
+        case QLocale::Taiwan:
+            return { QStringLiteral("Big5"), QStringLiteral("EUC-TW") };
+        default:
+            // 简体中文: GB18030 是 GBK/GB2312 超集,一条覆盖
+            return { QStringLiteral("GB18030"), QStringLiteral("GB2312") };
+        }
+    }
+    if (l.language() == QLocale::Japanese)
+        return { QStringLiteral("EUC-JP"), QStringLiteral("Shift_JIS"), QStringLiteral("ISO-2022-JP") };
+    if (l.language() == QLocale::Korean)
+        return { QStringLiteral("EUC-KR"), QStringLiteral("ISO-2022-KR"), QStringLiteral("Johab") };
+    if (l.language() == QLocale::Russian || l.language() == QLocale::Belarusian
+            || l.language() == QLocale::Bulgarian || l.language() == QLocale::Macedonian)
+        return { QStringLiteral("KOI8-R"), QStringLiteral("windows-1251"), QStringLiteral("ISO-8859-5") };
+    if (l.language() == QLocale::Ukrainian)
+        return { QStringLiteral("KOI8-U"), QStringLiteral("KOI8-R"), QStringLiteral("windows-1251") };
+
+    switch (l.language()) {
+    case QLocale::Arabic:
+        return { QStringLiteral("ISO-8859-6"), QStringLiteral("windows-1256") };
+    case QLocale::Czech:
+    case QLocale::Croatian:
+    case QLocale::Hungarian:
+    case QLocale::Polish:
+    case QLocale::Romanian:
+    case QLocale::Serbian:
+    case QLocale::Slovak:
+    case QLocale::Slovenian:
+        return { QStringLiteral("ISO-8859-2"), QStringLiteral("windows-1250") };
+    case QLocale::Greek:
+        return { QStringLiteral("ISO-8859-7"), QStringLiteral("windows-1253") };
+    case QLocale::Estonian:
+    case QLocale::Lithuanian:
+    case QLocale::Latvian:
+        return { QStringLiteral("ISO-8859-4"), QStringLiteral("windows-1257") };
+    case QLocale::Hebrew:
+        return { QStringLiteral("ISO-8859-8"), QStringLiteral("windows-1255") };
+    case QLocale::Thai:
+        return { QStringLiteral("ISO-8859-11"), QStringLiteral("windows-874") };
+    case QLocale::Turkish:
+        return { QStringLiteral("ISO-8859-9"), QStringLiteral("windows-1254") };
+    default:
+        break;
+    }
+    return {};
+}
+
+// 候选 = 语言表 + { 系统 charset, iso-8859-1, windows-1251 }(同 _system_encodings_get)
+QStringList decodeCandidates(const QLocale &l)
+{
+    QStringList list = langEncodings(l);
+    auto sys = QStringDecoder(QStringDecoder::System);
+    if (sys.isValid()) {
+        QString n = QString::fromLatin1(sys.name());
+        if (!list.contains(n))
+            list << n;
+    }
+    for (const char *e : { "ISO-8859-1", "windows-1251" }) {
+        const QString n = QString::fromLatin1(e);
+        if (!list.contains(n))
+            list << n;
+    }
+    return list;
+}
+
+} // namespace
+
+/**
+ * 将 SSID 原始字节解码为显示用 UTF-8 字符串。
+ *
+ * 实现参考 NetworkManager 上游的 nm_utils_ssid_to_utf8()
+ * (network-manager/src/libnm-core-impl/nm-utils.c),采用相同的解码策略:
+ *   1) 输入已是合法 UTF-8 → 原样返回(对应 nm_utils 的 g_utf8_validate 分支)
+ *   2) 按系统 locale 的语言表尝试候选编码,第一个完整解码成功者生效
+ *      (对应 nm_utils 的 _system_encodings_for_lang 语言→编码表,
+ *       如 zh_CN → euc-cn/gb2312/gb18030,GB18030 为 GBK 超集)
+ *   3) 语言表无命中时回退到默认候选: 系统 charset + iso-8859-1 + windows-1251
+ *      (对应 nm_utils 的 _system_encodings_get_default)
+ *   4) 全部失败 → 可打印 ASCII,其余字节替换为 '?'
+ *      (对应 nm_utils 的 g_convert_with_fallback/g_strcanon 兜底)
+ *
+ * 与 nm_utils 的区别: 使用 Qt 的 QStringDecoder(内部 ICU)做解码,
+ * 不依赖 glib/g_convert,亦不引入 libnm 头文件依赖。
+ * 注意: 与 nm_utils_ssid_to_utf8 相同,结果仅用于显示,不可用于字节匹配
+ * (匹配请使用 AccessPoints::rawSsid() 原始字节)。
+ */
+QString ssidToUtf8(const QByteArray &raw)
+{
+    if (raw.isEmpty())
+        return {};
+
+    // 1) 已是 UTF-8 → 直接返回
+    QStringDecoder u8(QStringDecoder::Utf8);
+    QString out = u8.decode(raw);
+    if (!u8.hasError())
+        return out;
+
+    // 2) 按系统 locale 的候选表逐个试(先验判断编码)
+    const QLocale sys = QLocale::system();
+    for (const QString &enc : decodeCandidates(sys)) {
+        QStringDecoder d(enc);
+        if (!d.isValid())
+            continue;
+        d.resetState();
+        out = d.decode(raw);
+        if (!d.hasError())
+            return out;
+    }
+
+    // 3) 兜底: 可打印 ASCII,其余 '?'
+    QString ascii;
+    ascii.reserve(raw.size());
+    for (char c : raw)
+        ascii += (c >= 0x20 && c <= 0x7E) ? QChar(c) : QChar('?');
+    return ascii;
+}
+
+bool ssidBytesMatch(const QByteArray &connSsid, const QByteArray &rawSsid, const QString &displaySsid)
+{
+    // 优先按原始字节精确匹配(与 NM 侧字节比较一致),rawSsid 为空(如 DSS 后端)
+    // 时回退按 UTF-8 显示名匹配历史连接
+    return (!rawSsid.isEmpty() && connSsid == rawSsid) || connSsid == displaySsid.toUtf8();
+}
+
+QByteArray ssidForSave(const QByteArray &rawSsid, const QString &displaySsid)
+{
+    // 保存连接时优先存 AP 原始字节(保证与 NM 字节匹配一致),
+    // rawSsid 为空(如隐藏网络)时回退 UTF-8 显示名
+    return rawSsid.isEmpty() ? displaySsid.toUtf8() : rawSsid;
+}
+
 Connectivity connectivityValue(uint sourceConnectivity)
 {
     switch (sourceConnectivity) {
diff --git a/src/netutils.h b/src/netutils.h
index d44dcff8e..3120f135b 100644
--- a/src/netutils.h
+++ b/src/netutils.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -33,6 +33,9 @@ namespace network {
 // using NetworkInter = com::deepin::daemon::Network;
 
 Connectivity connectivityValue(uint sourceConnectivity);
+QString ssidToUtf8(const QByteArray &raw);                            // 网络SSID原始字节 → UTF-8,locale 感知解码(类似 nm_utils_ssid_to_utf8)
+bool ssidBytesMatch(const QByteArray &connSsid, const QByteArray &rawSsid, const QString &displaySsid); // 连接ssid字节是否匹配某AP:优先原始字节,回退UTF-8显示名
+QByteArray ssidForSave(const QByteArray &rawSsid, const QString &displaySsid);                          // 保存用ssid字节:优先原始字节,空则回退UTF-8显示名
 DeviceStatus convertDeviceStatus(int sourceDeviceStatus);
 ConnectionStatus convertConnectionStatus(int sourceConnectionStatus);
 ConnectionStatus convertStateFromNetworkManager(NetworkManager::ActiveConnection::State state);
diff --git a/src/wirelessdevice.cpp b/src/wirelessdevice.cpp
index 5a60145ec..8a73624e8 100644
--- a/src/wirelessdevice.cpp
+++ b/src/wirelessdevice.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -124,6 +124,11 @@ QString AccessPoints::ssid() const
     return m_proxy->ssid();
 }
 
+QByteArray AccessPoints::rawSsid() const
+{
+    return m_proxy->rawSsid();
+}
+
 int AccessPoints::strength() const
 {
     return m_proxy->strength();
diff --git a/src/wirelessdevice.h b/src/wirelessdevice.h
index 5c90ab80a..053c6693e 100644
--- a/src/wirelessdevice.h
+++ b/src/wirelessdevice.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2018 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -90,6 +90,7 @@ class AccessPoints : public QObject
     bool connected() const;                                         // 网络是否连接成功
     ConnectionStatus status() const;                                // 当前网络的连接状态
     bool hidden() const;                                            // 是否为隐藏网络
+    QByteArray rawSsid() const;                                     // 网络SSID原始字节，用于与NM连接字节精确匹配/保存
     WlanType type() const;
 
 Q_SIGNALS: