diff --git a/services/source/inputinject/BUILD.gn b/services/source/inputinject/BUILD.gn
index 07b4208..0c69735 100644
--- a/services/source/inputinject/BUILD.gn
+++ b/services/source/inputinject/BUILD.gn
@@ -56,6 +56,7 @@ ohos_shared_library("libdinput_inject") {
   external_deps = [
     "c_utils:utils",
     "dsoftbus:softbus_client",
+    "eventhandler:libeventhandler",
     "ipc:ipc_core",
     "safwk:system_ability_fwk",
     "samgr:samgr_proxy",
diff --git a/services/source/inputinject/include/distributed_input_inject.h b/services/source/inputinject/include/distributed_input_inject.h
index d1d293f..68d556e 100644
--- a/services/source/inputinject/include/distributed_input_inject.h
+++ b/services/source/inputinject/include/distributed_input_inject.h
@@ -59,6 +59,8 @@ public:
     void GetVirtualKeyboardPathsByDhIds(const std::vector<std::string> &dhIds,
         std::vector<std::string> &shareDhidsPaths, std::vector<std::string> &shareDhIds);
 
+    void NotifyNodeMgrScanVirNode(const std::string &dhId);
+
 private:
     DistributedInputInject();
     ~DistributedInputInject();
diff --git a/services/source/inputinject/include/distributed_input_node_manager.h b/services/source/inputinject/include/distributed_input_node_manager.h
index e38def6..c900322 100644
--- a/services/source/inputinject/include/distributed_input_node_manager.h
+++ b/services/source/inputinject/include/distributed_input_node_manager.h
@@ -24,6 +24,7 @@
 #include <string>
 #include <thread>
 
+#include "event_handler.h"
 #include "nlohmann/json.hpp"
 
 #include "constants_dinput.h"
@@ -33,6 +34,8 @@
 namespace OHOS {
 namespace DistributedHardware {
 namespace DistributedInput {
+const uint32_t DINPUT_NODE_MANAGER_SCAN_ALL_NODE = 1;
+const std::string INPUT_NODE_DHID = "dhId";
 class DistributedInputNodeManager {
 public:
     DistributedInputNodeManager();
@@ -57,6 +60,24 @@ public:
 
     void GetVirtualKeyboardPathsByDhIds(const std::vector<std::string> &dhIds,
         std::vector<std::string> &shareDhidsPaths, std::vector<std::string> &shareDhIds);
+    void NotifyNodeMgrScanVirNode(const std::string &dhId);
+
+    class DInputNodeManagerEventHandler : public AppExecFwk::EventHandler {
+    public:
+        DInputNodeManagerEventHandler(const std::shared_ptr<AppExecFwk::EventRunner> &runner,
+            DistributedInputNodeManager *manager);
+        ~DInputNodeManagerEventHandler() override;
+
+        void ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event) override;
+    private:
+        void ScanAllNode(const AppExecFwk::InnerEvent::Pointer &event);
+
+        using nodeMgrFunc = void (DInputNodeManagerEventHandler::*)(
+            const AppExecFwk::InnerEvent::Pointer &event);
+        std::map<int32_t, nodeMgrFunc> eventFuncMap_;
+        DistributedInputNodeManager *nodeManagerObj_;
+    };
+
 private:
     void AddDeviceLocked(const std::string& dhId, std::unique_ptr<VirtualDevice> device);
     int32_t CreateHandle(const InputDevice& inputDevice, const std::string& devId, const std::string& dhId);
@@ -64,8 +85,8 @@ private:
     void VerifyInputDevice(const nlohmann::json& inputDeviceJson, InputDevice& pBuf);
     void InjectEvent();
 
-    void ScanSinkInputDevices(const std::string& dirName);
-    void OpenInputDevice(const std::string& devicePath);
+    void ScanSinkInputDevices(const std::string& dhId);
+    void OpenInputDevice(const std::string& devicePath, const std::string& dhId);
     bool IsVirtualDev(int fd);
     bool GetDevDhIdByFd(int fd, std::string& dhId, std::string& physicalPath);
     void SetPathForDevMap(std::string& dhId, const std::string& devicePath);
@@ -83,6 +104,7 @@ private:
     std::unique_ptr<InputHub> inputHub_;
     int32_t virtualTouchScreenFd_;
     std::once_flag callOnceFlag_;
+    std::shared_ptr<DInputNodeManagerEventHandler> callBackHandler_;
 };
 } // namespace DistributedInput
 } // namespace DistributedHardware
diff --git a/services/source/inputinject/src/distributed_input_inject.cpp b/services/source/inputinject/src/distributed_input_inject.cpp
index 1de63d9..010d6d6 100644
--- a/services/source/inputinject/src/distributed_input_inject.cpp
+++ b/services/source/inputinject/src/distributed_input_inject.cpp
@@ -259,12 +259,23 @@ int32_t DistributedInputInject::GetVirtualTouchScreenFd()
 void DistributedInputInject::GetVirtualKeyboardPathsByDhIds(const std::vector<std::string> &dhIds,
     std::vector<std::string> &shareDhidsPaths, std::vector<std::string> &shareDhIds)
 {
+    std::lock_guard<std::mutex> lock(inputNodeManagerMutex_);
     if (inputNodeManager_ == nullptr) {
         DHLOGE("inputNodeManager is nullptr");
         return;
     }
     inputNodeManager_->GetVirtualKeyboardPathsByDhIds(dhIds, shareDhidsPaths, shareDhIds);
 }
+
+void DistributedInputInject::NotifyNodeMgrScanVirNode(const std::string &dhId)
+{
+    std::lock_guard<std::mutex> lock(inputNodeManagerMutex_);
+    if (inputNodeManager_ == nullptr) {
+        DHLOGE("inputNodeManager is nullptr");
+        return;
+    }
+    inputNodeManager_->NotifyNodeMgrScanVirNode(dhId);
+}
 } // namespace DistributedInput
 } // namespace DistributedHardware
 } // namespace OHOS
\ No newline at end of file
diff --git a/services/source/inputinject/src/distributed_input_node_manager.cpp b/services/source/inputinject/src/distributed_input_node_manager.cpp
index d90535e..47fcdac 100644
--- a/services/source/inputinject/src/distributed_input_node_manager.cpp
+++ b/services/source/inputinject/src/distributed_input_node_manager.cpp
@@ -34,11 +34,14 @@ namespace DistributedInput {
 DistributedInputNodeManager::DistributedInputNodeManager() : isInjectThreadCreated_(false),
     isInjectThreadRunning_(false), inputHub_(std::make_unique<InputHub>()), virtualTouchScreenFd_(UN_INIT_FD_VALUE)
 {
+    DHLOGI("DistributedInputNodeManager ctor");
+    std::shared_ptr<AppExecFwk::EventRunner> runner = AppExecFwk::EventRunner::Create(true);
+    callBackHandler_ = std::make_shared<DistributedInputNodeManager::DInputNodeManagerEventHandler>(runner, this);
 }
 
 DistributedInputNodeManager::~DistributedInputNodeManager()
 {
-    DHLOGI("destructor start");
+    DHLOGI("DistributedInputNodeManager dtor");
     isInjectThreadCreated_.store(false);
     isInjectThreadRunning_.store(false);
     if (eventInjectThread_.joinable()) {
@@ -65,7 +68,6 @@ int32_t DistributedInputNodeManager::OpenDevicesNode(const std::string& devId, c
         DHLOGE("Can not create virtual node!");
         return ERR_DH_INPUT_SERVER_SOURCE_OPEN_DEVICE_NODE_FAIL;
     }
-    ScanSinkInputDevices(DEVICE_PATH);
     return DH_SUCCESS;
 }
 
@@ -128,16 +130,67 @@ void DistributedInputNodeManager::VerifyInputDevice(const nlohmann::json& inputD
     }
 }
 
-void DistributedInputNodeManager::ScanSinkInputDevices(const std::string& dirName)
+void DistributedInputNodeManager::ScanSinkInputDevices(const std::string& dhId)
 {
-    DHLOGI("ScanSinkInputDevices enter, dirName %s.", dirName.c_str());
+    DHLOGI("ScanSinkInputDevices enter, dhId %s.", dhId.c_str());
     std::vector<std::string> vecInputDevPath;
-    ScanInputDevicesPath(dirName, vecInputDevPath);
+    ScanInputDevicesPath(DEVICE_PATH, vecInputDevPath);
     for (auto &tempPath: vecInputDevPath) {
-        OpenInputDevice(tempPath);
+        OpenInputDevice(tempPath, dhId);
     }
 }
 
+void DistributedInputNodeManager::DInputNodeManagerEventHandler::ProcessEvent(
+    const AppExecFwk::InnerEvent::Pointer &event)
+{
+    DHLOGI("ProcessEvent enter.");
+    auto iter = eventFuncMap_.find(event->GetInnerEventId());
+    if (iter == eventFuncMap_.end()) {
+        DHLOGE("Event Id %d is undefined.", event->GetInnerEventId());
+        return;
+    }
+    nodeMgrFunc &func = iter->second;
+    (this->*func)(event);
+}
+
+DistributedInputNodeManager::DInputNodeManagerEventHandler::DInputNodeManagerEventHandler(
+    const std::shared_ptr<AppExecFwk::EventRunner> &runner, DistributedInputNodeManager *manager)
+    : AppExecFwk::EventHandler(runner)
+{
+    eventFuncMap_[DINPUT_NODE_MANAGER_SCAN_ALL_NODE] = &DInputNodeManagerEventHandler::ScanAllNode;
+
+    nodeManagerObj_ = manager;
+}
+
+DistributedInputNodeManager::DInputNodeManagerEventHandler::~DInputNodeManagerEventHandler()
+{
+    eventFuncMap_.clear();
+    nodeManagerObj_ = nullptr;
+}
+
+void DistributedInputNodeManager::DInputNodeManagerEventHandler::ScanAllNode(
+        const AppExecFwk::InnerEvent::Pointer &event)
+{
+    DHLOGI("ScanAllNode enter.");
+    std::shared_ptr<nlohmann::json> dataMsg = event->GetSharedObject<nlohmann::json>();
+    auto it = dataMsg->begin();
+    nlohmann::json innerMsg = *(it);
+    std::string devicedhId = innerMsg[INPUT_NODE_DHID];
+    nodeManagerObj_->ScanSinkInputDevices(devicedhId);
+}
+
+void DistributedInputNodeManager::NotifyNodeMgrScanVirNode(const std::string &dhId)
+{
+    DHLOGI("NotifyNodeMgrScanVirNode enter.");
+    std::shared_ptr<nlohmann::json> jsonArrayMsg = std::make_shared<nlohmann::json>();
+    nlohmann::json tmpJson;
+    tmpJson[INPUT_NODE_DHID] = dhId;
+    jsonArrayMsg->push_back(tmpJson);
+    AppExecFwk::InnerEvent::Pointer msgEvent = AppExecFwk::InnerEvent::Get(
+        DINPUT_NODE_MANAGER_SCAN_ALL_NODE, jsonArrayMsg, 0);
+    callBackHandler_->SendEvent(msgEvent, 0, AppExecFwk::EventQueue::Priority::IMMEDIATE);
+}
+
 bool DistributedInputNodeManager::IsVirtualDev(int fd)
 {
     char buffer[256] = {0};
@@ -179,6 +232,7 @@ bool DistributedInputNodeManager::GetDevDhIdByFd(int fd, std::string& dhId, std:
 
 void DistributedInputNodeManager::SetPathForDevMap(std::string& dhId, const std::string& devicePath)
 {
+    std::lock_guard<std::mutex> lock(virtualDeviceMapMutex_);
     auto iter = virtualDeviceMap_.begin();
     while (iter != virtualDeviceMap_.end()) {
         DHLOGD("Virtual device map dhid %s.", iter->first.c_str());
@@ -191,30 +245,32 @@ void DistributedInputNodeManager::SetPathForDevMap(std::string& dhId, const std:
     }
 }
 
-void DistributedInputNodeManager::OpenInputDevice(const std::string& devicePath)
+void DistributedInputNodeManager::OpenInputDevice(const std::string& devicePath, const std::string& dhId)
 {
     DHLOGI("Opening input device path: %s", devicePath.c_str());
-    std::string dhId;
+    std::string curDhId;
     std::string physicalPath;
     int fd = OpenInputDeviceFdByPath(devicePath);
     if (fd == -1) {
         DHLOGE("The fd open failed, devicePath %s.", devicePath.c_str());
         return;
     }
-    if (IsVirtualDev(fd) == false) {
+    if (!IsVirtualDev(fd)) {
         DHLOGE("The dev not virtual, devicePath %s.", devicePath.c_str());
         return;
     }
-    if (GetDevDhIdByFd(fd, dhId, physicalPath) == false) {
-        DHLOGE("Get dev dhid failed, devicePath %s.", devicePath.c_str());
+    if (!GetDevDhIdByFd(fd, curDhId, physicalPath) || dhId != curDhId) {
+        DHLOGE("This is not same dev, curDhId %s.", devicePath.c_str());
         return;
     }
-    SetPathForDevMap(dhId, devicePath);
+    DHLOGI("curDhId %s.", GetAnonyString(curDhId).c_str());
+    SetPathForDevMap(curDhId, devicePath);
 }
 
 void DistributedInputNodeManager::GetVirtualKeyboardPathsByDhIds(const std::vector<std::string> &dhIds,
     std::vector<std::string> &shareDhidsPaths, std::vector<std::string> &shareDhIds)
 {
+    std::lock_guard<std::mutex> lock(virtualDeviceMapMutex_);
     for (auto dhId_ : dhIds) {
         auto iter = virtualDeviceMap_.begin();
         while (iter != virtualDeviceMap_.end()) {
diff --git a/services/source/sourcemanager/src/distributed_input_source_manager.cpp b/services/source/sourcemanager/src/distributed_input_source_manager.cpp
index 6c9c46b..4070002 100644
--- a/services/source/sourcemanager/src/distributed_input_source_manager.cpp
+++ b/services/source/sourcemanager/src/distributed_input_source_manager.cpp
@@ -1132,6 +1132,9 @@ int32_t DistributedInputSourceManager::RegisterDistributedHardware(const std::st
     }
 
     cli->SyncNodeInfoRemoteInput(GetLocalNetworkId(), dhId, GetNodeDesc(parameters));
+
+    // 6. Notify node mgr to scan vir dev node info
+    DistributedInputInject::GetInstance().NotifyNodeMgrScanVirNode(dhId);
     return DH_SUCCESS;
 }
 
diff --git a/services/state/src/dinput_state.cpp b/services/state/src/dinput_state.cpp
index f17f0a3..1ecdbfa 100644
--- a/services/state/src/dinput_state.cpp
+++ b/services/state/src/dinput_state.cpp
@@ -209,7 +209,7 @@ void DInputState::CheckMouseKeyState(const int32_t &sessionId, const std::string
     DHLOGI("CheckMouseKeyState enter, mouseNodePath %s, mouseNodeDhId %s, sessionId %d.", mouseNodePath.c_str(),
         GetAnonyString(mouseNodeDhId).c_str(), sessionId);
     char canonicalPath[PATH_MAX] = {0x00};
-    if (mouseNodePath.length() == 0 || mouseNodePath.length() > PATH_MAX ||
+    if (mouseNodePath.length() == 0 || mouseNodePath.length() >= PATH_MAX ||
         realpath(mouseNodePath.c_str(), canonicalPath) == nullptr) {
         DHLOGE("mouse Nodepath check fail, error path: %s", mouseNodePath.c_str());
         return;