diff --git a/frameworks/js/napi/source/location_napi_event.cpp b/frameworks/js/napi/source/location_napi_event.cpp
index f3307059..299829d3 100644
--- a/frameworks/js/napi/source/location_napi_event.cpp
+++ b/frameworks/js/napi/source/location_napi_event.cpp
@@ -435,7 +435,17 @@ void GenerateExecuteContext(SingleLocationAsyncContext* context)
         }
         g_locatorProxy->StopLocating(callbackPtr);
         if (callbackHost->GetCount() != 0 && callbackHost->GetSingleLocation() == nullptr) {
-            context->errCode = ERRCODE_LOCATING_FAIL;
+            std::unique_ptr<Location> location = nullptr;
+#ifdef ENABLE_NAPI_MANAGER
+            g_locatorProxy->GetCachedLocationV9(location);
+#else
+            location = g_locatorProxy->GetCachedLocation();
+#endif
+            if (location != nullptr) {
+                callbackHost->SetSingleLocation(location);
+            } else {
+                context->errCode = ERRCODE_LOCATING_FAIL;
+            }
         }
         callbackHost->SetCount(1);
 #ifndef ENABLE_NAPI_MANAGER
diff --git a/frameworks/location_common/common/liblbsservice_common_version_script.txt b/frameworks/location_common/common/liblbsservice_common_version_script.txt
index c8a2fa03..e1290688 100644
--- a/frameworks/location_common/common/liblbsservice_common_version_script.txt
+++ b/frameworks/location_common/common/liblbsservice_common_version_script.txt
@@ -23,7 +23,7 @@
     "*Location*WriteAppLocatingStateEvent*";
     "*ExecuteHookWhenAddWorkRecord*";
     "*LOCATOR_SA_LOCATION_PERMISSION_CHECK*";
-
+    "*ExecuteHookWhenCheckAppForCacheTime*";
   local:
     *;
 };
\ No newline at end of file
diff --git a/frameworks/location_common/common/source/common_utils.cpp b/frameworks/location_common/common/source/common_utils.cpp
index 3f760363..ebe1cbdf 100644
--- a/frameworks/location_common/common/source/common_utils.cpp
+++ b/frameworks/location_common/common/source/common_utils.cpp
@@ -317,6 +317,13 @@ int64_t CommonUtils::GetCurrentTimeStamp()
     return static_cast<int64_t>(currentTime.tv_sec);
 }
 
+int64_t CommonUtils::GetCurrentTimeStampMs()
+{
+    struct timeval currentTime;
+    gettimeofday(&currentTime, nullptr);
+    return static_cast<int64_t>(currentTime.tv_sec * MILLI_PER_SEC + currentTime.tv_usec / MICRO_PER_MILLI);
+}
+
 std::vector<std::string> CommonUtils::Split(std::string str, std::string pattern)
 {
     std::vector<std::string> result;
diff --git a/frameworks/location_common/common/source/hook_utils.cpp b/frameworks/location_common/common/source/hook_utils.cpp
index bcc64174..670ce80d 100644
--- a/frameworks/location_common/common/source/hook_utils.cpp
+++ b/frameworks/location_common/common/source/hook_utils.cpp
@@ -135,5 +135,15 @@ bool HookUtils::CheckGnssLocationValidity(const std::unique_ptr<Location>& locat
         LocationProcessStage::CHECK_GNSS_LOCATION_VALIDITY, (void *)&gnssLocationValidStruct, nullptr);
     return gnssLocationValidStruct.result;
 }
+
+bool HookUtils::ExecuteHookWhenCheckAppForCacheTime(std::string packageName)
+{
+    LocatorRequestStruct locatorRequestStruct;
+    locatorRequestStruct.bundleName = packageName;
+    locatorRequestStruct.result = false;
+    ExecuteHook(
+        LocationProcessStage::LOCATOR_SA_LOCATION_CACHE_TIME_CHECK, (void *)&locatorRequestStruct, nullptr);
+    return locatorRequestStruct.result;
+}
 } // namespace Location
 } // namespace OHOS
diff --git a/interfaces/inner_api/include/common_utils.h b/interfaces/inner_api/include/common_utils.h
index 4e7a7328..5f85d1b1 100644
--- a/interfaces/inner_api/include/common_utils.h
+++ b/interfaces/inner_api/include/common_utils.h
@@ -172,6 +172,7 @@ public:
     static bool CheckAppInstalled(const std::string& bundleName);
     static int64_t GetCurrentTime();
     static int64_t GetCurrentTimeStamp();
+    static int64_t GetCurrentTimeStampMs();
     static std::vector<std::string> Split(std::string str, std::string pattern);
     static errno_t GetMacArray(const std::string& strMac, uint8_t mac[MAC_LEN]);
     static unsigned char ConvertStringToDigit(std::string str);
diff --git a/interfaces/inner_api/include/hook_utils.h b/interfaces/inner_api/include/hook_utils.h
index 0dcddbf6..696d2b25 100644
--- a/interfaces/inner_api/include/hook_utils.h
+++ b/interfaces/inner_api/include/hook_utils.h
@@ -43,6 +43,7 @@ enum class LocationProcessStage {
     ADD_REQUEST_TO_WORK_RECORD,
     LOCATOR_SA_LOCATION_PERMISSION_CHECK,
     LOCATOR_SA_COMMAND_PROCESS,
+    LOCATOR_SA_LOCATION_CACHE_TIME_CHECK,
 };
 
 typedef struct {
@@ -98,6 +99,7 @@ public:
         std::string bundleName);
     static bool CheckGnssLocationValidity(const std::unique_ptr<Location>& location);
     static bool ExecuteHookWhenCheckAppForUser(std::string packageName);
+    static bool ExecuteHookWhenCheckAppForCacheTime(std::string packageName);
 };
 } // namespace Location
 } // namespace OHOS
diff --git a/services/location_locator/locator/include/locator_background_proxy.h b/services/location_locator/locator/include/locator_background_proxy.h
index 32ea628a..42af94c1 100644
--- a/services/location_locator/locator/include/locator_background_proxy.h
+++ b/services/location_locator/locator/include/locator_background_proxy.h
@@ -24,6 +24,8 @@
 #include "app_state_data.h"
 #include "application_state_observer_stub.h"
 #include "common_event_subscriber.h"
+#include "event_handler.h"
+#include "event_runner.h"
 #include "system_ability_status_change_stub.h"
 
 #include "i_locator_callback.h"
@@ -39,6 +41,13 @@ public:
     void OnForegroundApplicationChanged(const AppExecFwk::AppStateData& appStateData) override;
 };
 
+class LocatorBackgroundHandler : public AppExecFwk::EventHandler {
+public:
+    explicit LocatorBackgroundHandler(const std::shared_ptr<AppExecFwk::EventRunner>& runner);
+    ~LocatorBackgroundHandler() override;
+    void ProcessEvent(const AppExecFwk::InnerEvent::Pointer& event) override;
+};
+
 class LocatorBackgroundProxy {
 public:
     static LocatorBackgroundProxy* GetInstance();
@@ -54,11 +63,11 @@ public:
     bool UnregisterAppStateObserver();
     bool IsAppInLocationContinuousTasks(pid_t uid, pid_t pid);
     bool IsAppHasFormVisible(uint32_t tokenId, uint64_t tokenIdEx);
-private:
     void StartLocator();
     void StopLocator();
     void StartLocatorThread();
     void StopLocatorThread();
+private:
     void OnUserSwitch(int32_t userId);
     void OnUserRemove(int32_t userId);
     void UpdateListOnSuspend(const std::shared_ptr<Request>& request, bool active);
@@ -116,6 +125,7 @@ private:
     static std::mutex locatorMutex_;
     sptr<AppExecFwk::IAppMgr> iAppMgr_ = nullptr;
     sptr<AppStateChangeCallback> appStateObserver_ = nullptr;
+    std::shared_ptr<LocatorBackgroundHandler> locatorBackgroundHandler_;
 };
 } // namespace Location
 } // namespace OHOS
diff --git a/services/location_locator/locator/include/locator_required_data_manager.h b/services/location_locator/locator/include/locator_required_data_manager.h
index f29caab7..446d0742 100644
--- a/services/location_locator/locator/include/locator_required_data_manager.h
+++ b/services/location_locator/locator/include/locator_required_data_manager.h
@@ -200,6 +200,12 @@ public:
     __attribute__((no_sanitize("cfi"))) void StartWifiScan(int fixNumber, bool flag);
     bool IsConnecting();
     static LocatorRequiredDataManager* GetInstance();
+    void SyncStillMovementState(bool state);
+    void SendWifiScanEvent();
+    void SendGetWifiListEvent(int timeout);
+    void SetToObtainCellinfo();
+    void UpdateWifiScanCompleteTimestamp();
+    int64_t GetWifiScanCompleteTimestamp();
 
 private:
     int timeInterval_ = 0;
@@ -215,7 +221,6 @@ private:
     void WifiInfoInit();
     bool IsWifiCallbackRegistered();
     void SetIsWifiCallbackRegistered(bool isWifiCallbackRegistered);
-    std::shared_ptr<Wifi::WifiScan> wifiScanPtr_;
     bool isWifiCallbackRegistered_ = false;
     std::mutex wifiRegisteredMutex_;
     WifiEvent wifiScanEventCallback_ = {0};
@@ -224,6 +229,13 @@ private:
     std::map<sptr<IRemoteObject>, AppIdentity> callbacksMap_;
     std::shared_ptr<ScanHandler> scanHandler_;
     std::shared_ptr<WifiSdkHandler> wifiSdkHandler_;
+    int64_t wifiScanTimestamp_ = 0;
+    std::mutex wifiScanCompleteTimestampMutex_;
+    int64_t wifiScanCompleteTimestamp_ = 0;
+    int64_t getWifiScanInfoTimestamp_ = 0;
+    std::mutex lastStillTimeMutex_;
+    int64_t lastStillTime_ = 0;
+    std::vector<Wifi::WifiScanInfo> wifiScanInfo_;
 };
 } // namespace Location
 } // namespace OHOS
diff --git a/services/location_locator/locator/source/locator_ability.cpp b/services/location_locator/locator/source/locator_ability.cpp
index 809eb9a6..5755ff75 100644
--- a/services/location_locator/locator/source/locator_ability.cpp
+++ b/services/location_locator/locator/source/locator_ability.cpp
@@ -96,7 +96,7 @@ const uint32_t EVENT_SET_SWITCH_STATE_TO_DB_BY_USERID = 0x0026;
 
 const uint32_t RETRY_INTERVAL_UNITE = 1000;
 const uint32_t RETRY_INTERVAL_OF_INIT_REQUEST_MANAGER = 5 * RETRY_INTERVAL_UNITE;
-const uint32_t RETRY_INTERVAL_OF_UNLOAD_SA = 30 * RETRY_INTERVAL_UNITE;
+const uint32_t RETRY_INTERVAL_OF_UNLOAD_SA = 30 * 60 * RETRY_INTERVAL_UNITE;
 const int COMMON_SA_ID = 4353;
 const int COMMON_SWITCH_STATE_ID = 30;
 const std::u16string COMMON_DESCRIPTION = u"location.IHifenceAbility";
@@ -171,6 +171,7 @@ void LocatorAbility::OnStop()
         LBSLOGD(LOCATOR, "LocatorAbility::reset LocationWorkingState failed.");
     }
     SetLocationhubStateToSyspara(LOCATIONHUB_STATE_UNLOAD);
+    LocatorRequiredDataManager::GetInstance()->UnregisterWifiCallBack();
     LBSLOGI(LOCATOR, "LocatorAbility::OnStop ability stopped.");
 }
 
@@ -958,13 +959,14 @@ LocationErrCode LocatorAbility::StartLocating(std::unique_ptr<RequestConfig>& re
         Security::AccessToken::AccessTokenKit::GetPermissionUsedType(request->GetTokenId(),
         ACCESS_APPROXIMATELY_LOCATION);
     request->SetPermUsedType(static_cast<int>(type));
-
+    LocatorRequiredDataManager::GetInstance()->SendWifiScanEvent();
 #ifdef EMULATOR_ENABLED
     // for emulator, report cache location is unnecessary
     HandleStartLocating(request, callback);
 #else
     if (NeedReportCacheLocation(request, callback)) {
         LBSLOGI(LOCATOR, "report cache location to %{public}s", identity.GetBundleName().c_str());
+        LocatorBackgroundProxy::GetInstance()->StartLocator();
         callback->AsObject()->RemoveDeathRecipient(death);
     } else {
         HandleStartLocating(request, callback);
@@ -1096,6 +1098,7 @@ LocationErrCode LocatorAbility::StopLocating(sptr<ILocatorCallback>& callback)
 
 LocationErrCode LocatorAbility::GetCacheLocation(std::unique_ptr<Location>& loc, AppIdentity &identity)
 {
+    LocatorBackgroundProxy::GetInstance()->StartLocator();
     if (locatorHandler_ == nullptr) {
         return ERRCODE_SERVICE_UNAVAILABLE;
     }
diff --git a/services/location_locator/locator/source/locator_background_proxy.cpp b/services/location_locator/locator/source/locator_background_proxy.cpp
index 088cdb45..c73f07a8 100644
--- a/services/location_locator/locator/source/locator_background_proxy.cpp
+++ b/services/location_locator/locator/source/locator_background_proxy.cpp
@@ -34,6 +34,7 @@
 
 #include "accesstoken_kit.h"
 #include "tokenid_kit.h"
+#include "ipc_skeleton.h"
 
 #ifdef BGTASKMGR_SUPPORT
 #include "background_mode.h"
@@ -48,6 +49,9 @@ namespace OHOS {
 namespace Location {
 std::mutex LocatorBackgroundProxy::requestListMutex_;
 std::mutex LocatorBackgroundProxy::locatorMutex_;
+const uint32_t EVENT_STARTLOCATING = 0x0100;
+const uint32_t EVENT_STOPLOCATING = 0x0200;
+
 LocatorBackgroundProxy* LocatorBackgroundProxy::GetInstance()
 {
     static LocatorBackgroundProxy data;
@@ -57,6 +61,8 @@ LocatorBackgroundProxy* LocatorBackgroundProxy::GetInstance()
 LocatorBackgroundProxy::LocatorBackgroundProxy()
 {
     InitArgsFromProp();
+    locatorBackgroundHandler_ = std::make_shared<LocatorBackgroundHandler>(AppExecFwk::EventRunner::Create(true,
+        AppExecFwk::ThreadMode::FFRT));
     if (!featureSwitch_) {
         return;
     }
@@ -66,7 +72,7 @@ LocatorBackgroundProxy::LocatorBackgroundProxy()
     requestsMap_->insert(make_pair(curUserId_, requestsList_));
 
     auto requestConfig = std::make_unique<RequestConfig>();
-    requestConfig->SetPriority(PRIORITY_LOW_POWER);
+    requestConfig->SetPriority(PRIORITY_FAST_FIRST_FIX);
     requestConfig->SetTimeInterval(timeInterval_);
     callback_ = sptr<mLocatorCallback>(new (std::nothrow) LocatorBackgroundProxy::mLocatorCallback());
     if (callback_ == nullptr) {
@@ -81,9 +87,12 @@ LocatorBackgroundProxy::LocatorBackgroundProxy()
     request_->SetPackageName(PROC_NAME);
     request_->SetRequestConfig(*requestConfig);
     request_->SetLocatorCallBack(callback_);
+    request_->SetUuid(PROC_NAME);
+    request_->SetTokenId(IPCSkeleton::GetCallingTokenID());
+    request_->SetTokenIdEx(IPCSkeleton::GetCallingFullTokenID());
     SubscribeSaStatusChangeListerner();
     isUserSwitchSubscribed_ = LocatorBackgroundProxy::UserSwitchSubscriber::Subscribe();
-    proxySwtich_ = (LocationConfigManager::GetInstance()->GetLocationSwitchState() == ENABLED);
+    proxySwtich_ = (LocationDataRdbManager::QuerySwitchState() == ENABLED);
     RegisterAppStateObserver();
 }
 
@@ -122,12 +131,9 @@ void LocatorBackgroundProxy::SubscribeSaStatusChangeListerner()
 void LocatorBackgroundProxy::StartLocatorThread()
 {
     auto requestManager = RequestManager::GetInstance();
-    auto locatorAbility = LocatorAbility::GetInstance();
-    std::this_thread::sleep_for(std::chrono::seconds(timeInterval_));
     std::unique_lock<std::mutex> lock(locatorMutex_, std::defer_lock);
     lock.lock();
-    isWating_ = false;
-    if (isLocating_ || !proxySwtich_ || requestsList_->empty()) {
+    if (isLocating_ || !proxySwtich_) {
         LBSLOGD(LOCATOR_BACKGROUND_PROXY, "cancel locating");
         lock.unlock();
         return;
@@ -136,7 +142,6 @@ void LocatorBackgroundProxy::StartLocatorThread()
     lock.unlock();
     LBSLOGI(LOCATOR_BACKGROUND_PROXY, "real start locating");
     requestManager->HandleStartLocating(request_);
-    locatorAbility->ReportLocationStatus(callback_, SESSION_START);
 }
 
 void LocatorBackgroundProxy::StopLocatorThread()
@@ -156,10 +161,13 @@ void LocatorBackgroundProxy::StopLocatorThread()
 
 void LocatorBackgroundProxy::StopLocator()
 {
+    locatorBackgroundHandler_->SendHighPriorityEvent(EVENT_STOPLOCATING, 0, 0);
 }
 
 void LocatorBackgroundProxy::StartLocator()
 {
+    locatorBackgroundHandler_->SendHighPriorityEvent(EVENT_STARTLOCATING, 0, 0);
+    locatorBackgroundHandler_->SendHighPriorityEvent(EVENT_STOPLOCATING, 0, DEFAULT_TIMEOUT_5S);
 }
 
 void LocatorBackgroundProxy::UpdateListOnRequestChange(const std::shared_ptr<Request>& request)
@@ -178,38 +186,11 @@ void LocatorBackgroundProxy::OnSuspend(const std::shared_ptr<Request>& request,
 // when switch off, stop proxy
 void LocatorBackgroundProxy::OnSaStateChange(bool enable)
 {
-    if (proxySwtich_ == enable || !featureSwitch_) {
-        return;
-    }
-    LBSLOGD(LOCATOR_BACKGROUND_PROXY, "OnSaStateChange %{public}d", enable);
-    proxySwtich_ = enable;
-    if (enable && !requestsList_->empty()) {
-        StartLocator();
-    } else {
-        StopLocator();
-    }
 }
 
 // called when deleteRequest called from locator ability (e.g. app stop locating)
 void LocatorBackgroundProxy::OnDeleteRequestRecord(const std::shared_ptr<Request>& request)
 {
-    if (!featureSwitch_) {
-        return;
-    }
-    bool listEmpty = false;
-    std::unique_lock<std::mutex> lock(requestListMutex_, std::defer_lock);
-    lock.lock();
-    auto it = find(requestsList_->begin(), requestsList_->end(), request);
-    if (it != requestsList_->end()) {
-        requestsList_->remove(request);
-        if (requestsList_->empty()) {
-            listEmpty = true;
-        }
-    }
-    lock.unlock();
-    if (listEmpty) {
-        StopLocator();
-    }
 }
 
 bool LocatorBackgroundProxy::CheckPermission(const std::shared_ptr<Request>& request) const
@@ -275,12 +256,6 @@ void LocatorBackgroundProxy::OnUserSwitch(int32_t userId)
     if (locatorAbility != nullptr) {
         locatorAbility->ApplyRequests(0);
     }
-    if (!requestsList_->empty()) {
-        StartLocator();
-    } else {
-        LBSLOGD(LOCATOR_BACKGROUND_PROXY, "OnUserSwitch stoplocator");
-        StopLocator();
-    }
 }
 
 void LocatorBackgroundProxy::OnUserRemove(int32_t userId)
@@ -315,16 +290,7 @@ bool LocatorBackgroundProxy::CheckMaxRequestNum(pid_t uid, const std::string& pa
 void LocatorBackgroundProxy::mLocatorCallback::OnLocationReport(const std::unique_ptr<Location>& location)
 {
     LBSLOGD(LOCATOR_BACKGROUND_PROXY, "locator background OnLocationReport");
-    auto locatorBackgroundProxy = LocatorBackgroundProxy::GetInstance();
-    auto requestsList = locatorBackgroundProxy->GetRequestsInProxy();
-    if (requestsList.empty()) {
-        locatorBackgroundProxy->StopLocator();
-        return;
-    }
-    // call the callback of each proxy app
-    for (auto request : requestsList) {
-        request->GetLocatorCallBack()->OnLocationReport(location);
-    }
+    LocatorBackgroundProxy::GetInstance()->StopLocator();
 }
 
 void LocatorBackgroundProxy::mLocatorCallback::OnLocatingStatusChange(const int status)
@@ -526,5 +492,28 @@ void AppStateChangeCallback::OnForegroundApplicationChanged(const AppExecFwk::Ap
         "The state of App changed, uid = %{public}d, pid = %{public}d, state = %{public}d", uid, pid, state);
     requestManager->HandlePowerSuspendChanged(pid, uid, state);
 }
+
+LocatorBackgroundHandler::LocatorBackgroundHandler(
+    const std::shared_ptr<AppExecFwk::EventRunner>& runner) : EventHandler(runner) {}
+
+LocatorBackgroundHandler::~LocatorBackgroundHandler() {}
+
+void LocatorBackgroundHandler::ProcessEvent(const AppExecFwk::InnerEvent::Pointer& event)
+{
+    auto locatorBackgroundProxy = LocatorBackgroundProxy::GetInstance();
+    uint32_t eventId = event->GetInnerEventId();
+    switch (eventId) {
+        case EVENT_STARTLOCATING: {
+            locatorBackgroundProxy->StartLocatorThread();
+            break;
+        }
+        case EVENT_STOPLOCATING: {
+            locatorBackgroundProxy->StopLocatorThread();
+            break;
+        }
+        default:
+            break;
+    }
+}
 } // namespace OHOS
 } // namespace Location
diff --git a/services/location_locator/locator/source/locator_required_data_manager.cpp b/services/location_locator/locator/source/locator_required_data_manager.cpp
index c92f56df..94d47856 100644
--- a/services/location_locator/locator/source/locator_required_data_manager.cpp
+++ b/services/location_locator/locator/source/locator_required_data_manager.cpp
@@ -29,14 +29,15 @@ const uint32_t EVENT_GET_WIFI_LIST = 0x0300;
 const uint32_t EVENT_REGISTER_WIFI_CALLBACK = 0x0400;
 const uint32_t EVENT_UNREGISTER_WIFI_CALLBACK = 0x0500;
 const int32_t DEFAULT_TIMEOUT_4S = 4000;
+const int32_t DEFAULT_TIMEOUT_MS = 1500;
 LocatorRequiredDataManager::LocatorRequiredDataManager()
 {
-#ifdef WIFI_ENABLE
-    WifiInfoInit();
-#endif
     scanHandler_ = std::make_shared<ScanHandler>(AppExecFwk::EventRunner::Create(true, AppExecFwk::ThreadMode::FFRT));
     wifiSdkHandler_ =
         std::make_shared<WifiSdkHandler>(AppExecFwk::EventRunner::Create(true, AppExecFwk::ThreadMode::FFRT));
+    if (wifiSdkHandler_ != nullptr) {
+        wifiSdkHandler_->SendEvent(EVENT_REGISTER_WIFI_CALLBACK, 0, 0);
+    }
 }
 
 LocatorRequiredDataManager* LocatorRequiredDataManager::GetInstance()
@@ -47,6 +48,44 @@ LocatorRequiredDataManager* LocatorRequiredDataManager::GetInstance()
 
 LocatorRequiredDataManager::~LocatorRequiredDataManager()
 {
+    if (wifiSdkHandler_ != nullptr) {
+        wifiSdkHandler_->SendEvent(EVENT_UNREGISTER_WIFI_CALLBACK, 0, 0);
+    }
+}
+
+void LocatorRequiredDataManager::SyncStillMovementState(bool state)
+{
+    std::unique_lock<std::mutex> lock(lastStillTimeMutex_);
+    if (state) {
+        lastStillTime_ = CommonUtils::GetCurrentTimeStampMs();
+        SendWifiScanEvent();
+    } else {
+        lastStillTime_ = 0;
+    }
+}
+
+void LocatorRequiredDataManager::SetToObtainCellinfo()
+{
+    bool needScan = false;
+    wifiScanTimestamp_ = CommonUtils::GetCurrentTimeStampMs();
+    std::unique_lock<std::mutex> lock(wifiScanCompleteTimestampMutex_);
+    wifiScanCompleteTimestamp_ = wifiScanTimestamp_ + 1;
+}
+
+void LocatorRequiredDataManager::SendWifiScanEvent()
+{
+    if (scanHandler_ != nullptr) {
+        AppExecFwk::InnerEvent::Pointer event = AppExecFwk::InnerEvent::Get(
+            EVENT_START_SCAN, 1);
+        scanHandler_->SendEvent(event);
+    }
+}
+
+void LocatorRequiredDataManager::SendGetWifiListEvent(int timeout)
+{
+    if (wifiSdkHandler_ != nullptr) {
+        wifiSdkHandler_->SendHighPriorityEvent(EVENT_GET_WIFI_LIST, 0, timeout);
+    }
 }
 
 __attribute__((no_sanitize("cfi"))) LocationErrCode LocatorRequiredDataManager::RegisterCallback(
@@ -59,21 +98,20 @@ __attribute__((no_sanitize("cfi"))) LocationErrCode LocatorRequiredDataManager::
         callbacksMap_[callback] = identity;
         LBSLOGD(LOCATOR, "after RegisterCallback, callback size:%{public}s",
             std::to_string(callbacksMap_.size()).c_str());
+        if (!IsWifiCallbackRegistered() && wifiSdkHandler_ != nullptr) {
+            wifiSdkHandler_->SendEvent(EVENT_REGISTER_WIFI_CALLBACK, 0, 0);
+        }
         bool needScan = false;
-        if (config->GetNeedStartScan() && (callbacksMap_.size() == 1 || !IsWifiCallbackRegistered())) {
+        if (config->GetNeedStartScan()) {
             needScan = true;
         }
         lock.unlock();
         if (needScan) {
-            if (wifiSdkHandler_ != nullptr) {
-                wifiSdkHandler_->SendEvent(EVENT_REGISTER_WIFI_CALLBACK, 0, 0);
-            }
-            timeInterval_ = config->GetScanIntervalMs();
-            if (scanHandler_ != nullptr) {
-                AppExecFwk::InnerEvent::Pointer event = AppExecFwk::InnerEvent::Get(
-                    EVENT_START_SCAN, config->GetFixNumber());
-                scanHandler_->SendEvent(event);
-            }
+            SendWifiScanEvent();
+            SendGetWifiListEvent(DEFAULT_TIMEOUT_4S >= config->GetScanTimeoutMs() ?
+                config->GetScanTimeoutMs() : DEFAULT_TIMEOUT_4S);
+        } else {
+            SendGetWifiListEvent(0);
         }
 #endif
     } else if (config->GetType() == LocatingRequiredDataType::BLUE_TOOTH) {
@@ -97,12 +135,6 @@ LocationErrCode LocatorRequiredDataManager::UnregisterCallback(const sptr<IRemot
         return ERRCODE_SUCCESS;
     }
     lock.unlock();
-    if (wifiSdkHandler_ != nullptr) {
-        wifiSdkHandler_->SendEvent(EVENT_UNREGISTER_WIFI_CALLBACK, 0, 0);
-    }
-    if (scanHandler_ != nullptr) {
-        scanHandler_->SendEvent(EVENT_STOP_SCAN, 0, 0);
-    }
 #endif
     return ERRCODE_SUCCESS;
 }
@@ -178,11 +210,6 @@ void LocatorBleCallbackWapper::OnNotifyMsgReportFromLpDevice(const Bluetooth::UU
 #endif
 
 #ifdef WIFI_ENABLE
-void LocatorRequiredDataManager::WifiInfoInit()
-{
-    wifiScanPtr_ = Wifi::WifiScan::GetInstance(WIFI_SCAN_ABILITY_ID);
-}
-
 bool LocatorRequiredDataManager::IsWifiCallbackRegistered()
 {
     std::unique_lock<std::mutex> lock(wifiRegisteredMutex_);
@@ -237,6 +264,8 @@ __attribute__((no_sanitize("cfi"))) void LocatorRequiredDataManager::GetWifiScan
     if (wifiSdkHandler_ != nullptr) {
         wifiSdkHandler_->RemoveEvent(EVENT_GET_WIFI_LIST);
     }
+    wifiScanInfo_ = wifiScanInfo;
+    getWifiScanInfoTimestamp_ = CommonUtils::GetCurrentTimeStampMs();
 }
 
 std::vector<std::shared_ptr<LocatingRequiredData>> LocatorRequiredDataManager::GetLocatingRequiredDataByWifi(
@@ -258,6 +287,18 @@ std::vector<std::shared_ptr<LocatingRequiredData>> LocatorRequiredDataManager::G
     return res;
 }
 
+void LocatorRequiredDataManager::UpdateWifiScanCompleteTimestamp()
+{
+    std::unique_lock<std::mutex> lock(wifiScanCompleteTimestampMutex_);
+    wifiScanCompleteTimestamp_ = CommonUtils::GetCurrentTimeStampMs();
+}
+
+int64_t LocatorRequiredDataManager::GetWifiScanCompleteTimestamp()
+{
+    std::unique_lock<std::mutex> lock(wifiScanCompleteTimestampMutex_);
+    return wifiScanCompleteTimestamp_;
+}
+
 void LocatorWifiScanEventCallback::OnWifiScanStateChanged(int state, int size)
 {
     LBSLOGD(LOCATOR, "OnWifiScanStateChanged state=%{public}d", state);
@@ -265,6 +306,7 @@ void LocatorWifiScanEventCallback::OnWifiScanStateChanged(int state, int size)
         LBSLOGE(LOCATOR, "OnWifiScanStateChanged false");
     }
     auto dataManager = LocatorRequiredDataManager::GetInstance();
+    dataManager->UpdateWifiScanCompleteTimestamp();
     if (!dataManager->IsConnecting()) {
         LBSLOGE(LOCATOR, "%{public}s no valid callback, return", __func__);
         return;
@@ -307,38 +349,27 @@ __attribute__((no_sanitize("cfi"))) void LocatorRequiredDataManager::StartWifiSc
         LBSLOGE(LOCATOR, "%{public}s no valid callback, return", __func__);
         return;
     }
-    if (!IsConnecting()) {
-        if (scanHandler_ != nullptr) {
-            scanHandler_->RemoveEvent(EVENT_START_SCAN);
-        }
-        if (wifiSdkHandler_ != nullptr) {
-            wifiSdkHandler_->RemoveEvent(EVENT_GET_WIFI_LIST);
-        }
-        return;
-    }
 #ifdef WIFI_ENABLE
-    if (wifiScanPtr_ == nullptr) {
+    bool needScan = false;
+    // �����ϴ�ɨ�賬��1.5�룬�����Ѿ�ɨ�����
+    int64_t time = CommonUtils::GetCurrentTimeStampMs();
+    if ((time - wifiScanTimestamp_ > DEFAULT_TIMEOUT_MS &&
+        GetWifiScanCompleteTimestamp() > wifiScanTimestamp_)) {
+        needScan = true;
+    }
+    if (!needScan) {
+        if (GetWifiScanCompleteTimestamp() > wifiScanTimestamp_) {
+            SendGetWifiListEvent(0);
+        }
         return;
     }
-    int ret = wifiScanPtr_->Scan();
+    wifiScanTimestamp_ = CommonUtils::GetCurrentTimeStampMs();
+    int ret = Wifi::WifiScan::GetInstance(WIFI_SCAN_ABILITY_ID)->Scan();
     if (ret != Wifi::WIFI_OPT_SUCCESS) {
         LBSLOGE(LOCATOR, "%{public}s WifiScan failed, ret=%{public}d", __func__, ret);
-        if (wifiSdkHandler_ != nullptr) {
-            wifiSdkHandler_->SendHighPriorityEvent(EVENT_GET_WIFI_LIST, 0, 0);
-        }
-    } else {
-        if (wifiSdkHandler_ != nullptr) {
-            wifiSdkHandler_->SendHighPriorityEvent(EVENT_GET_WIFI_LIST, 0, DEFAULT_TIMEOUT_4S);
-        }
+        SendGetWifiListEvent(0);
     }
 #endif
-    if (fixNumber == 1) {
-        return;
-    }
-    LBSLOGD(LOCATOR, "StartWifiScan timeInterval_=%{public}d", timeInterval_);
-    if (scanHandler_ != nullptr) {
-        scanHandler_->SendHighPriorityEvent(EVENT_START_SCAN, 0, timeInterval_);
-    }
 }
 
 bool LocatorRequiredDataManager::IsConnecting()
diff --git a/services/location_locator/locator/source/report_manager.cpp b/services/location_locator/locator/source/report_manager.cpp
index 36760375..e5dd017b 100644
--- a/services/location_locator/locator/source/report_manager.cpp
+++ b/services/location_locator/locator/source/report_manager.cpp
@@ -37,6 +37,7 @@ static constexpr double MAXIMUM_FUZZY_LOCATION_DISTANCE = 4000.0; // Unit m
 static constexpr double MINIMUM_FUZZY_LOCATION_DISTANCE = 3000.0; // Unit m
 static constexpr int GNSS_FIX_CACHED_TIME = 25;
 static constexpr int NLP_FIX_CACHED_TIME = 25;
+static constexpr int WHITE_FIX_CACHED_TIME = 60;
 
 ReportManager* ReportManager::GetInstance()
 {
@@ -343,12 +344,23 @@ std::unique_ptr<Location> ReportManager::GetCacheLocation(const std::shared_ptr<
 {
     int64_t curTime = CommonUtils::GetCurrentTimeStamp();
     std::unique_ptr<Location> cacheLocation = nullptr;
-    if (!CommonUtils::DoubleEqual(cacheGnssLocation_.GetLatitude(), MIN_LATITUDE - 1) &&
-        (curTime - cacheGnssLocation_.GetTimeStamp() / MILLI_PER_SEC) <= GNSS_FIX_CACHED_TIME) {
-        cacheLocation = std::make_unique<Location>(cacheGnssLocation_);
-    } else if (!CommonUtils::DoubleEqual(cacheNlpLocation_.GetLatitude(), MIN_LATITUDE - 1) &&
-        (curTime - cacheNlpLocation_.GetTimeStamp() / MILLI_PER_SEC) <= NLP_FIX_CACHED_TIME) {
-        cacheLocation = std::make_unique<Location>(cacheNlpLocation_);
+    std::string packageName = request->GetPackageName();
+    if (HookUtils::ExecuteHookWhenCheckAppForCacheTime(packageName)) {
+        if (!CommonUtils::DoubleEqual(cacheGnssLocation_.GetLatitude(), MIN_LATITUDE - 1) &&
+            (curTime - cacheGnssLocation_.GetTimeStamp() / MILLI_PER_SEC) <= WHITE_FIX_CACHED_TIME) {
+            cacheLocation = std::make_unique<Location>(cacheGnssLocation_);
+        } else if (!CommonUtils::DoubleEqual(cacheNlpLocation_.GetLatitude(), MIN_LATITUDE - 1) &&
+            (curTime - cacheNlpLocation_.GetTimeStamp() / MILLI_PER_SEC) <= WHITE_FIX_CACHED_TIME) {
+            cacheLocation = std::make_unique<Location>(cacheNlpLocation_);
+        }
+    } else {
+        if (!CommonUtils::DoubleEqual(cacheGnssLocation_.GetLatitude(), MIN_LATITUDE - 1) &&
+            (curTime - cacheGnssLocation_.GetTimeStamp() / MILLI_PER_SEC) <= GNSS_FIX_CACHED_TIME) {
+            cacheLocation = std::make_unique<Location>(cacheGnssLocation_);
+        } else if (!CommonUtils::DoubleEqual(cacheNlpLocation_.GetLatitude(), MIN_LATITUDE - 1) &&
+            (curTime - cacheNlpLocation_.GetTimeStamp() / MILLI_PER_SEC) <= NLP_FIX_CACHED_TIME) {
+            cacheLocation = std::make_unique<Location>(cacheNlpLocation_);
+        }
     }
     std::unique_ptr<Location> finalLocation = GetPermittedLocation(request, cacheLocation);
     if (!ResultCheck(finalLocation, request)) {