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diff --git a/.cache/clangd/index/main.cpp.76A75E580B25A05E.idx b/.cache/clangd/index/main.cpp.76A75E580B25A05E.idx
index dc96be6..f1635ba 100644
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diff --git a/bin/softbus_daemon b/bin/softbus_daemon
index 37b5ac5..5ec808f 100755
Binary files a/bin/softbus_daemon and b/bin/softbus_daemon differ
diff --git a/main.cpp b/main.cpp
index 3b0b49b..16375e6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -14,7 +14,7 @@ void signalHandler(int signal)
     if (coreService) {
         coreService->shutdown();
     }
-    
+
     QCoreApplication::quit();
 }
 
@@ -67,6 +67,14 @@ int main(int argc, char *argv[])
                            << "valid roles are: CoreRouter, CollectorSerial, CollectorCan, Collector, SqlServer";
         return 1;
     }
+    // 开启coreserive的初始化工作|线程
+    // QThread* coreServiceThread = new QThread();
+    // CoreService* coreService = new CoreService();
+    // coreService->moveToThread(coreServiceThread);
+    // QObject::connect(coreServiceThread, &QThread::started, coreService, &CoreService::initialize);
+    // QObject::connect(coreServiceThread, &QThread::finished, coreService, &CoreService::deleteLater);
+    // QObject::connect(coreServiceThread, &QThread::finished, coreServiceThread, &QThread::deleteLater);
+    // coreServiceThread->start();
 
     CoreService* coreService = CoreService::instance();
     if (!coreService->initialize()) {
diff --git a/src/device_bus/DeviceBus.cpp b/src/device_bus/DeviceBus.cpp
index d939c65..d1b319c 100644
--- a/src/device_bus/DeviceBus.cpp
+++ b/src/device_bus/DeviceBus.cpp
@@ -52,15 +52,27 @@ bool DeviceBus::initialize(const QJsonObject &rootConfig) {
   d->manager->setDeviceTreeModel(d->treeModel);
   d->manager->setRegistry(d->registry.get());
 
+  // 1) Load persisted config and initialize manager
+  if (!d->manager->initialize(rootConfig)) {
+    return false;
+  }
+
+  // 2) Start monitor service
   if (!d->monitorService) {
     d->monitorService = std::make_unique<monitor::DeviceMonitorService>(nullptr);
     d->monitorService->setRegistry(d->registry.get());
     d->monitorService->setDirtyCallback([this]() { this->markDeviceTreeDirty(); });
-    if (!d->monitorService->start()) {
-      LOG_WARNING() << "DeviceBus: device monitor service start failed";
-    }
   }
-  return d->manager->initialize(rootConfig);
+  if (!d->monitorService->start()) {
+    LOG_WARNING() << "DeviceBus: device monitor service start failed";
+  }
+
+  // 3) Initial snapshot scan (register existing devices)
+  d->monitorService->initialScan();
+
+  // 4) Reconcile runtime instances against latest tree model
+  d->manager->reconcileFromTreeModel();
+  return true;
 }
 
 void DeviceBus::shutdown() {
diff --git a/src/device_bus/manager/DeviceBusManager.cpp b/src/device_bus/manager/DeviceBusManager.cpp
index 678f1eb..4a7d6b3 100644
--- a/src/device_bus/manager/DeviceBusManager.cpp
+++ b/src/device_bus/manager/DeviceBusManager.cpp
@@ -4,6 +4,7 @@
 
 #include <QJsonDocument>
 #include <QSerialPort>
+#include <QSet>
 // #include <algorithm>
 
 #include "hardware/drivers/serial/SerialQtDriver.h"
@@ -58,6 +59,44 @@ bool DeviceBusManager::initialize(const QJsonObject& rootConfig)
     return true;
 }
 
+bool DeviceBusManager::reconcileFromTreeModel()
+{
+    if (!m_treeModel) {
+        return false;
+    }
+
+    QSet<QString> desiredSerialEndpoints;
+    const auto nodes = m_treeModel->nodes();
+    for (const auto& n : nodes) {
+        if (!n.enabled) continue;
+        if (!n.params.value(QStringLiteral("online")).toBool(true)) continue;
+
+        auto kind = softbus::devices::kindFromType(n.type);
+        if (kind == softbus::devices::DeviceKind::Unknown) {
+            kind = softbus::devices::inferDeviceKindFromEndpoint(n.endpoint);
+        }
+
+        if (kind == softbus::devices::DeviceKind::Serial) {
+            desiredSerialEndpoints.insert(n.endpoint);
+            if (!m_serialDevicesByEndpoint.contains(n.endpoint)) {
+                initializeSerialDevice(n.endpoint, n.params);
+            }
+            m_deviceEndpointsMap.insert(n.endpoint, kind);
+        }
+    }
+
+    // Remove runtime devices that are no longer desired/offline
+    const auto currentKeys = m_serialDevicesByEndpoint.keys();
+    for (const auto& endpoint : currentKeys) {
+        if (!desiredSerialEndpoints.contains(endpoint)) {
+            shutdownSerialDevice(endpoint);
+            m_deviceEndpointsMap.remove(endpoint);
+        }
+    }
+
+    return true;
+}
+
 void DeviceBusManager::shutdown()
 {
     // 关闭并销毁所有串口设备
diff --git a/src/device_bus/manager/DeviceBusManager.h b/src/device_bus/manager/DeviceBusManager.h
index 317a470..e2d084a 100644
--- a/src/device_bus/manager/DeviceBusManager.h
+++ b/src/device_bus/manager/DeviceBusManager.h
@@ -20,6 +20,7 @@ public:
     void setRegistry(softbus::device_bus::registry::IDeviceRegistry* registry);
 
     bool initialize(const QJsonObject& rootConfig);
+    bool reconcileFromTreeModel();
     void shutdown();
 
 private:
diff --git a/src/device_bus/monitor/DeviceMonitorService.cpp b/src/device_bus/monitor/DeviceMonitorService.cpp
index 418bf82..8258a56 100644
--- a/src/device_bus/monitor/DeviceMonitorService.cpp
+++ b/src/device_bus/monitor/DeviceMonitorService.cpp
@@ -49,6 +49,19 @@ bool DeviceMonitorService::start()
     return ok;
 }
 
+bool DeviceMonitorService::initialScan()
+{
+    bool any = false;
+    for (auto& m : m_monitors) {
+        const auto snapshot = m->snapshotExisting();
+        for (const auto& ev : snapshot) {
+            onEvent(ev);
+            any = true;
+        }
+    }
+    return any;
+}
+
 void DeviceMonitorService::stop()
 {
     if (!m_started) return;
diff --git a/src/device_bus/monitor/DeviceMonitorService.h b/src/device_bus/monitor/DeviceMonitorService.h
index 8ecb696..ed8795e 100644
--- a/src/device_bus/monitor/DeviceMonitorService.h
+++ b/src/device_bus/monitor/DeviceMonitorService.h
@@ -23,6 +23,7 @@ public:
 
     bool start();
     void stop();
+    bool initialScan();
     void setRegistry(softbus::device_bus::registry::IDeviceRegistry* registry);
     void setDirtyCallback(std::function<void()> cb);
 
diff --git a/src/device_bus/monitor/IDeviceMonitor.h b/src/device_bus/monitor/IDeviceMonitor.h
index 115b754..2bb685c 100644
--- a/src/device_bus/monitor/IDeviceMonitor.h
+++ b/src/device_bus/monitor/IDeviceMonitor.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <functional>
+#include <vector>
 
 #include <QObject>
 
@@ -20,6 +21,7 @@ public:
 
     virtual bool start() = 0;
     virtual void stop() = 0;
+    virtual std::vector<DeviceEvent> snapshotExisting() = 0;
 
     void setCallback(EventCallback cb) { m_cb = std::move(cb); }
 
diff --git a/src/device_bus/monitor/NetlinkDeviceMonitor.cpp b/src/device_bus/monitor/NetlinkDeviceMonitor.cpp
index ca94e25..76ed342 100644
--- a/src/device_bus/monitor/NetlinkDeviceMonitor.cpp
+++ b/src/device_bus/monitor/NetlinkDeviceMonitor.cpp
@@ -5,6 +5,7 @@
 #include <errno.h>
 #include <string.h>
 #include <unistd.h>
+#include <ifaddrs.h>
 
 #include <sys/socket.h>
 #include <linux/netlink.h>
@@ -149,6 +150,38 @@ void NetlinkDeviceMonitor::onReadable()
     }
 }
 
+std::vector<DeviceEvent> NetlinkDeviceMonitor::snapshotExisting()
+{
+    std::vector<DeviceEvent> out;
+
+    ifaddrs* ifaddr = nullptr;
+    if (::getifaddrs(&ifaddr) != 0) {
+        return out;
+    }
+
+    QSet<QString> seen;
+    for (ifaddrs* it = ifaddr; it != nullptr; it = it->ifa_next) {
+        if (!it->ifa_name) continue;
+
+        const QString ifname = QString::fromUtf8(it->ifa_name);
+        if (ifname.isEmpty() || seen.contains(ifname)) continue;
+        seen.insert(ifname);
+
+        DeviceEvent ev;
+        ev.timestamp = QDateTime::currentDateTimeUtc();
+        ev.type = DeviceEventType::NetInterface;
+        ev.action = DeviceEventAction::Add;
+        ev.subsystem = QStringLiteral("net");
+        ev.ifname = ifname;
+        ev.ifindex = ::if_nametoindex(it->ifa_name);
+        ev.linkUp = (it->ifa_flags & IFF_RUNNING) != 0;
+        out.push_back(ev);
+    }
+
+    ::freeifaddrs(ifaddr);
+    return out;
+}
+
 } // namespace softbus::device_bus::monitor
 
 #endif // __linux__
diff --git a/src/device_bus/monitor/NetlinkDeviceMonitor.h b/src/device_bus/monitor/NetlinkDeviceMonitor.h
index 2f43bfd..287610a 100644
--- a/src/device_bus/monitor/NetlinkDeviceMonitor.h
+++ b/src/device_bus/monitor/NetlinkDeviceMonitor.h
@@ -7,6 +7,7 @@
 #include <QSocketNotifier>
 #include <QSet>
 #include <QHash>
+#include <vector>
 
 namespace softbus::device_bus::monitor
 {
@@ -20,6 +21,7 @@ public:
 
     bool start() override;
     void stop() override;
+    std::vector<DeviceEvent> snapshotExisting() override;
 
 private:
     void onReadable();
diff --git a/src/device_bus/monitor/UdevDeviceMonitor.cpp b/src/device_bus/monitor/UdevDeviceMonitor.cpp
index 4e7122d..3134ff9 100644
--- a/src/device_bus/monitor/UdevDeviceMonitor.cpp
+++ b/src/device_bus/monitor/UdevDeviceMonitor.cpp
@@ -3,6 +3,8 @@
 #if defined(__linux__)
 
 #include <unistd.h>
+#include <vector>
+#include <QRegularExpression>
 
 #include <QFileInfo>
 
@@ -10,6 +12,37 @@
 
 namespace softbus::device_bus::monitor
 {
+namespace {
+
+bool isWhitelistedSerialDevnode(const QString& devnode)
+{
+    if (devnode.startsWith(QStringLiteral("/dev/ttyUSB"))) return true;
+    if (devnode.startsWith(QStringLiteral("/dev/ttyACM"))) return true;
+
+    // Board UART allowlist: ttyS1 ~ ttyS6
+    static const QRegularExpression kTtySRe(QStringLiteral("^/dev/ttyS(\\d+)$"));
+    const auto m = kTtySRe.match(devnode);
+    if (m.hasMatch()) {
+        bool ok = false;
+        const int n = m.captured(1).toInt(&ok);
+        if (ok && n >= 1 && n <= 6) return true;
+    }
+    return false;
+}
+
+bool isConsoleLikeTty(const QString& devnode)
+{
+    if (devnode == QStringLiteral("/dev/console")) return true;
+    if (devnode == QStringLiteral("/dev/tty")) return true;
+    if (devnode == QStringLiteral("/dev/ptmx")) return true;
+    if (devnode.startsWith(QStringLiteral("/dev/pts/"))) return true;
+
+    // Linux VT consoles: /dev/tty0.../dev/tty63 (without 'S')
+    static const QRegularExpression kVtRe(QStringLiteral("^/dev/tty(\\d+)$"));
+    return kVtRe.match(devnode).hasMatch();
+}
+
+} // namespace
 
 UdevDeviceMonitor::UdevDeviceMonitor(QObject* parent)
     : IDeviceMonitor(parent)
@@ -94,35 +127,7 @@ void UdevDeviceMonitor::onReadable()
         const char* action = udev_device_get_action(dev);
         DeviceEvent ev = toEvent(dev, action);
 
-        // Drop unknown action (usually noise / incomplete events)
-        if (ev.action == DeviceEventAction::Unknown) {
-            udev_device_unref(dev);
-            continue;
-        }
-
-        // USB: only keep usb_device (drop interface-level noise)
-        if (ev.subsystem == QStringLiteral("usb")) {
-            const QString devtype = ev.props.value(QStringLiteral("DEVTYPE"));
-            if (!devtype.isEmpty() && devtype != QStringLiteral("usb_device")) {
-                udev_device_unref(dev);
-                continue;
-            }
-
-            // Drop most "change" spam for usb (keep add/remove)
-            if (ev.action == DeviceEventAction::Change) {
-                udev_device_unref(dev);
-                continue;
-            }
-
-            // If it carries no stable identifiers, it's not useful
-            if (ev.devnode.isEmpty() && ev.vid.isEmpty() && ev.pid.isEmpty() && ev.serial.isEmpty()) {
-                udev_device_unref(dev);
-                continue;
-            }
-        }
-
-        // Storage: keep add/remove; drop change spam
-        if (ev.type == DeviceEventType::Storage && ev.action == DeviceEventAction::Change) {
+        if (!shouldKeepEvent(ev)) {
             udev_device_unref(dev);
             continue;
         }
@@ -132,6 +137,117 @@ void UdevDeviceMonitor::onReadable()
     }
 }
 
+std::vector<DeviceEvent> UdevDeviceMonitor::snapshotExisting()
+{
+    std::vector<DeviceEvent> out;
+    if (!m_udev) {
+        // Snapshot can be requested before start(); create temp context.
+        m_udev = udev_new();
+        if (!m_udev) {
+            LOG_ERROR() << "UdevDeviceMonitor: snapshot udev_new failed";
+            return out;
+        }
+    }
+
+    udev_enumerate* en = udev_enumerate_new(m_udev);
+    if (!en) {
+        return out;
+    }
+
+    udev_enumerate_add_match_subsystem(en, "tty");
+    udev_enumerate_add_match_subsystem(en, "usb");
+    udev_enumerate_add_match_subsystem(en, "block");
+    if (udev_enumerate_scan_devices(en) != 0) {
+        udev_enumerate_unref(en);
+        return out;
+    }
+
+    udev_list_entry* devices = udev_enumerate_get_list_entry(en);
+    udev_list_entry* entry = nullptr;
+    udev_list_entry_foreach(entry, devices) {
+        const char* path = udev_list_entry_get_name(entry);
+        if (!path) continue;
+
+        udev_device* dev = udev_device_new_from_syspath(m_udev, path);
+        if (!dev) continue;
+
+        DeviceEvent ev = toEvent(dev, "add");
+        if (shouldKeepEvent(ev)) {
+            out.push_back(ev);
+        }
+
+        udev_device_unref(dev);
+    }
+
+    udev_enumerate_unref(en);
+    return out;
+}
+
+bool UdevDeviceMonitor::shouldKeepEvent(const DeviceEvent& ev) const
+{
+    // Drop unknown action (usually noise / incomplete events)
+    if (ev.action == DeviceEventAction::Unknown) {
+        return false;
+    }
+
+    // Serial tty: keep only business serial nodes.
+    if (ev.subsystem == QStringLiteral("tty")) {
+        if (ev.devnode.isEmpty()) {
+            LOG_ERROR() << "UdevDeviceMonitor: devnode is empty" << ev.devnode;
+            return false;
+        }
+        if (isConsoleLikeTty(ev.devnode)) {
+            LOG_INFO() << "UdevDeviceMonitor: console like tty" << ev.devnode;
+            return false;
+        }
+        if (!isWhitelistedSerialDevnode(ev.devnode)) {
+            LOG_INFO() << "UdevDeviceMonitor: not whitelisted serial devnode" << ev.devnode;
+            return false;
+        }
+    }
+
+    // USB: only keep usb_device (drop interface-level noise)
+    if (ev.subsystem == QStringLiteral("usb")) {
+        const QString devtype = ev.props.value(QStringLiteral("DEVTYPE"));
+        if (!devtype.isEmpty() && devtype != QStringLiteral("usb_device")) {
+            return false;
+        }
+
+        // Drop most "change" spam for usb (keep add/remove)
+        if (ev.action == DeviceEventAction::Change) {
+            return false;
+        }
+
+        // If it carries no stable identifiers, it's not useful
+        if (ev.devnode.isEmpty() && ev.vid.isEmpty() && ev.pid.isEmpty() && ev.serial.isEmpty()) {
+            return false;
+        }
+
+        // Drop Linux root hubs/controller pseudo devices.
+        if (ev.vid == QStringLiteral("1d6b")) {
+            return false;
+        }
+        const QString modelLower = ev.model.toLower();
+        if (modelLower.contains(QStringLiteral("hub")) ||
+            modelLower.contains(QStringLiteral("host_controller")) ||
+            modelLower.contains(QStringLiteral("xhci"))) {
+            return false;
+        }
+    }
+
+    // Block: keep only usb-backed storage add/remove, drop non-storage blocks.
+    if (ev.subsystem == QStringLiteral("block")) {
+        if (ev.type != DeviceEventType::Storage) {
+            return false;
+        }
+        if (ev.action == DeviceEventAction::Change) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
 QString UdevDeviceMonitor::getProp(struct udev_device* dev, const char* key)
 {
     if (!dev || !key) return {};
diff --git a/src/device_bus/monitor/UdevDeviceMonitor.h b/src/device_bus/monitor/UdevDeviceMonitor.h
index 4db01de..a1db0b6 100644
--- a/src/device_bus/monitor/UdevDeviceMonitor.h
+++ b/src/device_bus/monitor/UdevDeviceMonitor.h
@@ -20,9 +20,11 @@ public:
 
     bool start() override;
     void stop() override;
+    std::vector<DeviceEvent> snapshotExisting() override;
 
 private:
     void onReadable();
+    bool shouldKeepEvent(const DeviceEvent& ev) const;
     DeviceEvent toEvent(struct udev_device* dev, const char* action);
     static QString getProp(struct udev_device* dev, const char* key);
 
diff --git a/src/device_bus/monitor/WindowsDeviceMonitor.cpp b/src/device_bus/monitor/WindowsDeviceMonitor.cpp
index 367d661..71731d9 100644
--- a/src/device_bus/monitor/WindowsDeviceMonitor.cpp
+++ b/src/device_bus/monitor/WindowsDeviceMonitor.cpp
@@ -38,5 +38,11 @@ void WindowsDeviceMonitor::stop()
 #endif
 }
 
+std::vector<DeviceEvent> WindowsDeviceMonitor::snapshotExisting()
+{
+    // TODO: implement full snapshot on Windows.
+    return {};
+}
+
 } // namespace softbus::device_bus::monitor
 
diff --git a/src/device_bus/monitor/WindowsDeviceMonitor.h b/src/device_bus/monitor/WindowsDeviceMonitor.h
index c380764..43f1f62 100644
--- a/src/device_bus/monitor/WindowsDeviceMonitor.h
+++ b/src/device_bus/monitor/WindowsDeviceMonitor.h
@@ -15,6 +15,7 @@ public:
 
     bool start() override;
     void stop() override;
+    std::vector<DeviceEvent> snapshotExisting() override;
 
 private:
 #if defined(_WIN32)
diff --git a/src/device_bus/registry/DeviceRegistry.cpp b/src/device_bus/registry/DeviceRegistry.cpp
index 5937434..6e5ca41 100644
--- a/src/device_bus/registry/DeviceRegistry.cpp
+++ b/src/device_bus/registry/DeviceRegistry.cpp
@@ -85,6 +85,27 @@ QString DeviceRegistry::buildStableKey(const softbus::device_bus::monitor::Devic
 {
     const QString type = inferType(ev);
 
+    // Important: ttyACM/ttyUSB 可能“同一条物理设备多路口”但 serial 相同，
+    // 旧逻辑会导致 stableKey 冲突并相互覆盖 endpoint。
+    // tty 事件：devnode 必须用于唯一标识（ttyACM 可能多路口但 serial 可能相同）。
+    // 若具备 SYSPATH，也一并拼接，便于跨层级归并与排查。
+    if (ev.type == softbus::device_bus::monitor::DeviceEventType::Serial ||
+        ev.subsystem == QStringLiteral("tty")) {
+        const QString syspath = ev.props.value(QStringLiteral("SYSPATH"));
+        if (!ev.devnode.isEmpty()) {
+            if (!syspath.isEmpty()) {
+                return type + QStringLiteral("|syspath|") + syspath + QStringLiteral("|devnode|") + ev.devnode;
+            }
+            return type + QStringLiteral("|devnode|") + ev.devnode;
+        }
+        if (!syspath.isEmpty()) {
+            return type + QStringLiteral("|syspath|") + syspath;
+        }
+        if (!ev.serial.isEmpty()) {
+            return type + QStringLiteral("|serial|") + ev.serial;
+        }
+    }
+
     if (!ev.serial.isEmpty()) {
         return type + QStringLiteral("|serial|") + ev.serial;
     }
@@ -109,6 +130,15 @@ QString DeviceRegistry::buildStableKey(const softbus::device_bus::monitor::Devic
 
 QString DeviceRegistry::buildPreferredNodeId(const softbus::device_bus::monitor::DeviceEvent& ev, const QString& stableKey)
 {
+    // For tty devices (ttyS/ttyUSB/ttyACM...), a single physical device may expose
+    // multiple ports that share the same serial. If we only use `serial` as id,
+    // upsert() will collide by preferredId and overwrite endpoints.
+    if (ev.type == softbus::device_bus::monitor::DeviceEventType::Serial ||
+        ev.subsystem == QStringLiteral("tty")) {
+        const QByteArray hash = QCryptographicHash::hash(stableKey.toUtf8(), QCryptographicHash::Sha1).toHex();
+        return QStringLiteral("dev_") + QString::fromUtf8(hash.left(12));
+    }
+
     if (!ev.serial.isEmpty()) {
         return QStringLiteral("dev_serial_") + ev.serial;
     }