diff --git a/services/abilitymgr/abilitymgr.gni b/services/abilitymgr/abilitymgr.gni
index a957ac0f72..ebec6ef7bb 100644
--- a/services/abilitymgr/abilitymgr.gni
+++ b/services/abilitymgr/abilitymgr.gni
@@ -49,7 +49,7 @@ abilityms_files = [
   "src/extension_record/base_extension_record.cpp",
   "src/extension_record/extension_record_manager.cpp",
   "src/extension_running_timeout_monitor.cpp",
-  "src/bg_user_extension_monitor.cpp",
+  "src/background_user_extension_monitor.cpp",
   "src/extension_record/extension_record.cpp",
   "src/extension_record/extension_record_factory.cpp",
   "src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
diff --git a/services/abilitymgr/include/ability_manager_service.h b/services/abilitymgr/include/ability_manager_service.h
index 4d075a9ac0..650be5d474 100644
--- a/services/abilitymgr/include/ability_manager_service.h
+++ b/services/abilitymgr/include/ability_manager_service.h
@@ -3513,7 +3513,7 @@ private:
     void ReportPreventStartAbilityResult(const AppExecFwk::AbilityInfo &callerAbilityInfo,
         const AppExecFwk::AbilityInfo &abilityInfo);
 
-    void ReportBgUserExtensionEvent(const sptr<IRemoteObject> &callerToken,
+    void ReportBackgroundUserExtensionEvent(const sptr<IRemoteObject> &callerToken,
         const AppExecFwk::AbilityInfo &calleeAbilityInfo, int32_t targetUserId);
 
     void SetAbilityRequestSessionInfo(AbilityRequest &abilityRequest, AppExecFwk::ExtensionAbilityType extensionType);
diff --git a/services/abilitymgr/include/bg_user_extension_monitor.h b/services/abilitymgr/include/background_user_extension_monitor.h
similarity index 65%
rename from services/abilitymgr/include/bg_user_extension_monitor.h
rename to services/abilitymgr/include/background_user_extension_monitor.h
index f0d040daff..c907d5bfcd 100644
--- a/services/abilitymgr/include/bg_user_extension_monitor.h
+++ b/services/abilitymgr/include/background_user_extension_monitor.h
@@ -13,8 +13,8 @@
  * limitations under the License.
  */
 
-#ifndef OHOS_ABILITY_RUNTIME_BG_USER_EXTENSION_MONITOR_H
-#define OHOS_ABILITY_RUNTIME_BG_USER_EXTENSION_MONITOR_H
+#ifndef OHOS_ABILITY_RUNTIME_BACKGROUND_USER_EXTENSION_MONITOR_H
+#define OHOS_ABILITY_RUNTIME_BACKGROUND_USER_EXTENSION_MONITOR_H
 
 #include <list>
 #include <mutex>
@@ -25,14 +25,14 @@
 namespace OHOS {
 namespace AAFwk {
 
-struct BgUserExtensionCallerInfo {
+struct BackgroundUserExtensionCallerInfo {
     int32_t callerUid = 0;
     int32_t callerUserId = 0;
     std::string callerProcessName;
     std::string callerBundleName;
 };
 
-struct BgUserExtensionEvent {
+struct BackgroundUserExtensionEvent {
     // Caller info
     int32_t callerUid = 0;
     std::string callerBundleName;
@@ -45,13 +45,13 @@ struct BgUserExtensionEvent {
     int32_t cnt = 1;
 };
 
-class BgUserExtensionMonitor : public DelayedSingleton<BgUserExtensionMonitor> {
-    DECLARE_DELAYED_SINGLETON(BgUserExtensionMonitor)
+class BackgroundUserExtensionMonitor : public DelayedSingleton<BackgroundUserExtensionMonitor> {
+    DECLARE_DELAYED_SINGLETON(BackgroundUserExtensionMonitor)
 public:
     void StartMonitor();
     void StopMonitor();
 
-    void OnBgUserExtensionStarted(const BgUserExtensionCallerInfo &callerInfo,
+    void OnBackgroundUserExtensionStarted(const BackgroundUserExtensionCallerInfo &callerInfo,
         const std::string &calleeBundleName, const std::string &calleeProcessName,
         const std::string &extensionTypeName, const std::string &abilityName,
         int32_t calleeUid);
@@ -59,20 +59,20 @@ public:
     void ReportCachedEvents();
 
 private:
-    void AddOrUpdateEvent(const BgUserExtensionEvent &event);
-    bool IsDuplicateEvent(const BgUserExtensionEvent &event,
-        std::list<BgUserExtensionEvent>::iterator &dupIter);
+    void AddOrUpdateEvent(const BackgroundUserExtensionEvent &event);
+    bool IsDuplicateEvent(const BackgroundUserExtensionEvent &event,
+        std::list<BackgroundUserExtensionEvent>::iterator &dupIter);
     void SubmitPeriodicTask();
 
     std::mutex cacheMutex_;
-    std::list<BgUserExtensionEvent> cachedEvents_;
+    std::list<BackgroundUserExtensionEvent> cachedEvents_;
 
     static constexpr int32_t HISEVENT_PARAM_COUNT = 7;
     static constexpr int32_t MAX_CACHED_EVENTS = 5;
     static constexpr int64_t REPORT_INTERVAL_MS = 2 * 60 * 60 * 1000; // 2 hours
-    static constexpr const char *PERIODIC_TASK_NAME = "BgUserExtensionPeriodicTask";
+    static constexpr const char *PERIODIC_TASK_NAME = "BackgroundUserExtensionPeriodicTask";
 };
 
 } // namespace AAFwk
 } // namespace OHOS
-#endif // OHOS_ABILITY_RUNTIME_BG_USER_EXTENSION_MONITOR_H
+#endif // OHOS_ABILITY_RUNTIME_BACKGROUND_USER_EXTENSION_MONITOR_H
diff --git a/services/abilitymgr/src/ability_manager_service.cpp b/services/abilitymgr/src/ability_manager_service.cpp
index 2a08e46551..37f276b502 100644
--- a/services/abilitymgr/src/ability_manager_service.cpp
+++ b/services/abilitymgr/src/ability_manager_service.cpp
@@ -55,7 +55,7 @@
 #include "hitrace_meter.h"
 #include "hisysevent_report.h"
 #include "extension_running_timeout_monitor.h"
-#include "bg_user_extension_monitor.h"
+#include "background_user_extension_monitor.h"
 #include "insight_intent_execute_manager.h"
 #include "insight_intent_db_cache.h"
 #include "insight_intent_utils.h"
@@ -475,7 +475,7 @@ bool AbilityManagerService::Init()
     modularObjectExtensionEventMgr_->SubscribeSysEventReceiver();
     ReportDataPartitionUsageManager::SendReportDataPartitionUsageEvent();
     DelayedSingleton<AAFwk::ExtensionRunningTimeoutMonitor>::GetInstance()->StartMonitor();
-    DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance()->StartMonitor();
+    DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance()->StartMonitor();
 #ifdef RESOURCE_SCHEDULE_SERVICE_ENABLE
     ResourceSchedule::ResSchedClient::GetInstance().InitKillReasonListener();
 #endif
@@ -606,7 +606,7 @@ void AbilityManagerService::InitStartupFlag()
 void AbilityManagerService::OnStop()
 {
     TAG_LOGI(AAFwkTag::ABILITYMGR, "stop");
-    DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance()->StopMonitor();
+    DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance()->StopMonitor();
 #ifdef BGTASKMGR_CONTINUOUS_TASK_ENABLE
     std::unique_lock<ffrt::mutex> lock(bgtaskObserverMutex_);
     if (bgtaskObserver_) {
@@ -4461,7 +4461,7 @@ int32_t AbilityManagerService::StartExtensionAbilityInner(const Want &want, cons
         }
     }
     if (eventInfo.errCode == ERR_OK) {
-        ReportBgUserExtensionEvent(callerToken, abilityInfo, validUserId);
+        ReportBackgroundUserExtensionEvent(callerToken, abilityInfo, validUserId);
     }
     ReportAbilityAssociatedStartInfoToRSS(abilityRequest.abilityInfo, RES_TYPE_EXTENSION_START_ABILITY, callerToken);
     return eventInfo.errCode;
@@ -6156,7 +6156,7 @@ int32_t AbilityManagerService::ConnectLocalAbility(const Want &want, const int32
             indirectCallerInfo);
     }
     if (ret == ERR_OK) {
-        ReportBgUserExtensionEvent(callerToken, abilityInfo, userId);
+        ReportBackgroundUserExtensionEvent(callerToken, abilityInfo, userId);
     }
     return ret;
 }
@@ -15515,13 +15515,13 @@ void AbilityManagerService::ReportPreventStartAbilityResult(const AppExecFwk::Ab
     hisyseventReport->Report("AAFWK", "PREVENT_START_ABILITY", HISYSEVENT_BEHAVIOR);
 }
 
-void AbilityManagerService::ReportBgUserExtensionEvent(const sptr<IRemoteObject> &callerToken,
+void AbilityManagerService::ReportBackgroundUserExtensionEvent(const sptr<IRemoteObject> &callerToken,
     const AppExecFwk::AbilityInfo &calleeAbilityInfo, int32_t targetUserId)
 {
     if (JudgeMultiUserConcurrency(targetUserId)) {
         return;
     }
-    TAG_LOGI(AAFwkTag::ABILITYMGR, "report bg user extension event, targetUserId:%{public}d", targetUserId);
+    TAG_LOGI(AAFwkTag::ABILITYMGR, "report background user extension event, targetUserId:%{public}d", targetUserId);
 
     int32_t callerUid = IPCSkeleton::GetCallingUid();
     int32_t callerUserId = callerUid / BASE_USER_RANGE;
@@ -15551,14 +15551,14 @@ void AbilityManagerService::ReportBgUserExtensionEvent(const sptr<IRemoteObject>
         }
     }
 
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     if (monitor != nullptr) {
-        AAFwk::BgUserExtensionCallerInfo callerInfo;
+        AAFwk::BackgroundUserExtensionCallerInfo callerInfo;
         callerInfo.callerUid = callerUid;
         callerInfo.callerUserId = callerUserId;
         callerInfo.callerProcessName = callerProcessName;
         callerInfo.callerBundleName = callerBundleName;
-        monitor->OnBgUserExtensionStarted(callerInfo,
+        monitor->OnBackgroundUserExtensionStarted(callerInfo,
             calleeAbilityInfo.bundleName, calleeAbilityInfo.process,
             calleeAbilityInfo.extensionTypeName, calleeAbilityInfo.name,
             calleeAbilityInfo.applicationInfo.uid);
diff --git a/services/abilitymgr/src/bg_user_extension_monitor.cpp b/services/abilitymgr/src/background_user_extension_monitor.cpp
similarity index 73%
rename from services/abilitymgr/src/bg_user_extension_monitor.cpp
rename to services/abilitymgr/src/background_user_extension_monitor.cpp
index b0b101d645..9e40dcbab9 100644
--- a/services/abilitymgr/src/bg_user_extension_monitor.cpp
+++ b/services/abilitymgr/src/background_user_extension_monitor.cpp
@@ -13,7 +13,7 @@
  * limitations under the License.
  */
 
-#include "bg_user_extension_monitor.h"
+#include "background_user_extension_monitor.h"
 
 #include <functional>
 
@@ -33,7 +33,7 @@ constexpr const char *ABILITY_NAME_KEY = "ABILITY_NAME";
 constexpr const char *RUNNING_DURATION_KEY = "RUNNING_DURATION";
 constexpr const char *STILL_ALIVE_KEY = "STILL_ALIVE";
 constexpr const char *CNT_KEY = "CNT";
-constexpr const char *BG_START_EVENT_VALUE = "BG_USER_START_EVENT";
+constexpr const char *BACKGROUND_START_EVENT_VALUE = "BACKGROUND_USER_START_EVENT";
 
 bool CopyStringParam(const std::string &str, std::vector<std::unique_ptr<char[]>> &buffers,
     std::vector<char*> &ptrs)
@@ -48,7 +48,7 @@ bool CopyStringParam(const std::string &str, std::vector<std::unique_ptr<char[]>
     return true;
 }
 
-std::string BuildJsonInfo(const BgUserExtensionEvent &event)
+std::string BuildJsonInfo(const BackgroundUserExtensionEvent &event)
 {
     return std::string("{\"callerUid\":") + std::to_string(event.callerUid) +
         ",\"callerBundleName\":\"" + event.callerBundleName + "\"" +
@@ -61,37 +61,38 @@ std::string BuildJsonInfo(const BgUserExtensionEvent &event)
 }
 }
 
-BgUserExtensionMonitor::BgUserExtensionMonitor() {}
+BackgroundUserExtensionMonitor::BackgroundUserExtensionMonitor() {}
 
-BgUserExtensionMonitor::~BgUserExtensionMonitor() {}
+BackgroundUserExtensionMonitor::~BackgroundUserExtensionMonitor() {}
 
-void BgUserExtensionMonitor::StartMonitor()
+void BackgroundUserExtensionMonitor::StartMonitor()
 {
-    TAG_LOGI(AAFwkTag::ABILITYMGR, "start bg user extension monitor");
+    TAG_LOGI(AAFwkTag::ABILITYMGR, "start background user extension monitor");
     SubmitPeriodicTask();
 }
 
-void BgUserExtensionMonitor::StopMonitor()
+void BackgroundUserExtensionMonitor::StopMonitor()
 {
-    TAG_LOGI(AAFwkTag::ABILITYMGR, "stop bg user extension monitor");
+    TAG_LOGI(AAFwkTag::ABILITYMGR, "stop background user extension monitor");
     auto taskHandler = TaskHandlerWrap::GetFfrtHandler();
     if (taskHandler != nullptr) {
         taskHandler->CancelTask(PERIODIC_TASK_NAME);
     }
 }
 
-void BgUserExtensionMonitor::OnBgUserExtensionStarted(const BgUserExtensionCallerInfo &callerInfo,
+void BackgroundUserExtensionMonitor::OnBackgroundUserExtensionStarted(
+    const BackgroundUserExtensionCallerInfo &callerInfo,
     const std::string &calleeBundleName, const std::string &calleeProcessName,
     const std::string &extensionTypeName, const std::string &abilityName,
     int32_t calleeUid)
 {
     TAG_LOGI(AAFwkTag::ABILITYMGR,
-        "bg user extension started, type:%{public}s, callerUid:%{public}d, callerBundle:%{public}s, "
+        "background user extension started, type:%{public}s, callerUid:%{public}d, callerBundle:%{public}s, "
         "calleeBundle:%{public}s, ability:%{public}s, calleeUid:%{public}d",
         extensionTypeName.c_str(), callerInfo.callerUid, callerInfo.callerBundleName.c_str(),
         calleeBundleName.c_str(), abilityName.c_str(), calleeUid);
 
-    BgUserExtensionEvent event;
+    BackgroundUserExtensionEvent event;
     event.callerUid = callerInfo.callerUid;
     event.callerBundleName = callerInfo.callerBundleName;
     event.calleeBundleName = calleeBundleName;
@@ -104,7 +105,7 @@ void BgUserExtensionMonitor::OnBgUserExtensionStarted(const BgUserExtensionCalle
     AddOrUpdateEvent(event);
 }
 
-void BgUserExtensionMonitor::SubmitPeriodicTask()
+void BackgroundUserExtensionMonitor::SubmitPeriodicTask()
 {
     auto taskHandler = TaskHandlerWrap::GetFfrtHandler();
     if (taskHandler == nullptr) {
@@ -113,21 +114,21 @@ void BgUserExtensionMonitor::SubmitPeriodicTask()
     }
 
     auto task = []() {
-        TAG_LOGI(AAFwkTag::ABILITYMGR, "bg user extension periodic task triggered");
-        auto monitor = DelayedSingleton<BgUserExtensionMonitor>::GetInstance();
+        TAG_LOGI(AAFwkTag::ABILITYMGR, "background user extension periodic task triggered");
+        auto monitor = DelayedSingleton<BackgroundUserExtensionMonitor>::GetInstance();
         monitor->ReportCachedEvents();
         monitor->SubmitPeriodicTask();
     };
     taskHandler->SubmitTask(task, PERIODIC_TASK_NAME, REPORT_INTERVAL_MS);
 }
 
-void BgUserExtensionMonitor::ReportCachedEvents()
+void BackgroundUserExtensionMonitor::ReportCachedEvents()
 {
-    std::list<BgUserExtensionEvent> eventsToReport;
+    std::list<BackgroundUserExtensionEvent> eventsToReport;
     {
         std::lock_guard<std::mutex> lock(cacheMutex_);
         if (cachedEvents_.empty()) {
-            TAG_LOGD(AAFwkTag::ABILITYMGR, "no bg user extension events to report");
+            TAG_LOGD(AAFwkTag::ABILITYMGR, "no background user extension events to report");
             return;
         }
         eventsToReport = cachedEvents_;
@@ -138,9 +139,9 @@ void BgUserExtensionMonitor::ReportCachedEvents()
     std::vector<char*> extensionTypePtrs;
     std::vector<char*> bundleNamePtrs;
 
-    // EXTENSION_TYPE is fixed to "BG_START_EVENT" with length 1
-    if (!CopyStringParam(BG_START_EVENT_VALUE, stringBuffers, extensionTypePtrs)) {
-        TAG_LOGE(AAFwkTag::ABILITYMGR, "strcpy_s failed for BG_START_EVENT");
+    // EXTENSION_TYPE is fixed to "BACKGROUND_START_EVENT" with length 1
+    if (!CopyStringParam(BACKGROUND_START_EVENT_VALUE, stringBuffers, extensionTypePtrs)) {
+        TAG_LOGE(AAFwkTag::ABILITYMGR, "strcpy_s failed for BACKGROUND_START_EVENT");
         return;
     }
 
@@ -169,12 +170,12 @@ void BgUserExtensionMonitor::ReportCachedEvents()
     report.InsertParam(STILL_ALIVE_KEY, emptyBoolArray);
     report.InsertParam(CNT_KEY, emptyInt32Array);
     int32_t ret = report.Report(DOMAIN, EVENT_NAME, HISYSEVENT_STATISTIC);
-    TAG_LOGI(AAFwkTag::ABILITYMGR, "reported %{public}zu bg user extension events, ret: %{public}d",
+    TAG_LOGI(AAFwkTag::ABILITYMGR, "reported %{public}zu background user extension events, ret: %{public}d",
         eventsToReport.size(), ret);
 }
 
-bool BgUserExtensionMonitor::IsDuplicateEvent(const BgUserExtensionEvent &event,
-    std::list<BgUserExtensionEvent>::iterator &dupIter)
+bool BackgroundUserExtensionMonitor::IsDuplicateEvent(const BackgroundUserExtensionEvent &event,
+    std::list<BackgroundUserExtensionEvent>::iterator &dupIter)
 {
     for (auto it = cachedEvents_.begin(); it != cachedEvents_.end(); ++it) {
         if (it->calleeExtensionTypeName == event.calleeExtensionTypeName &&
@@ -186,9 +187,9 @@ bool BgUserExtensionMonitor::IsDuplicateEvent(const BgUserExtensionEvent &event,
     return false;
 }
 
-void BgUserExtensionMonitor::AddOrUpdateEvent(const BgUserExtensionEvent &event)
+void BackgroundUserExtensionMonitor::AddOrUpdateEvent(const BackgroundUserExtensionEvent &event)
 {
-    std::list<BgUserExtensionEvent>::iterator dupIter;
+    std::list<BackgroundUserExtensionEvent>::iterator dupIter;
     if (IsDuplicateEvent(event, dupIter)) {
         dupIter->cnt++;
         dupIter->callerUid = event.callerUid;
@@ -196,7 +197,7 @@ void BgUserExtensionMonitor::AddOrUpdateEvent(const BgUserExtensionEvent &event)
         dupIter->calleeBundleName = event.calleeBundleName;
         dupIter->calleeUid = event.calleeUid;
         TAG_LOGD(AAFwkTag::ABILITYMGR,
-            "updated existing bg user extension event for %{public}s, cnt: %{public}d",
+            "updated existing background user extension event for %{public}s, cnt: %{public}d",
             event.calleeAbilityName.c_str(), dupIter->cnt);
         return;
     }
@@ -210,7 +211,7 @@ void BgUserExtensionMonitor::AddOrUpdateEvent(const BgUserExtensionEvent &event)
 
     cachedEvents_.push_back(event);
     TAG_LOGD(AAFwkTag::ABILITYMGR,
-        "added new bg user extension event for %{public}s, cache size: %{public}zu",
+        "added new background user extension event for %{public}s, cache size: %{public}zu",
         event.calleeAbilityName.c_str(), cachedEvents_.size());
 }
 
diff --git a/test/moduletest/ability_timeout_module_test/BUILD.gn b/test/moduletest/ability_timeout_module_test/BUILD.gn
index 2256fc753f..a513ac2998 100644
--- a/test/moduletest/ability_timeout_module_test/BUILD.gn
+++ b/test/moduletest/ability_timeout_module_test/BUILD.gn
@@ -30,7 +30,7 @@ ohos_moduletest("ability_timeout_module_test") {
     "${ability_runtime_services_path}/abilitymgr/src/ability_bundle_event_callback.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/ability_cache_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/ability_manager_service.cpp",
-    "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+    "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/app_exit_reason_data_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/assert_fault_callback_death_mgr.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/assert_fault_proxy.cpp",
diff --git a/test/moduletest/running_infos_module_test/BUILD.gn b/test/moduletest/running_infos_module_test/BUILD.gn
index 70a3ab062f..10fb8b0094 100644
--- a/test/moduletest/running_infos_module_test/BUILD.gn
+++ b/test/moduletest/running_infos_module_test/BUILD.gn
@@ -31,7 +31,7 @@ ohos_moduletest("running_infos_module_test") {
     "${ability_runtime_services_path}/abilitymgr/src/ability_bundle_event_callback.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/ability_cache_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/ability_manager_service.cpp",
-    "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+    "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/app_exit_reason_data_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/assert_fault_callback_death_mgr.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/assert_fault_proxy.cpp",
diff --git a/test/unittest/ability_manager_service_first_test/abilitymgr.gni b/test/unittest/ability_manager_service_first_test/abilitymgr.gni
index 9f269531f3..d11350c825 100644
--- a/test/unittest/ability_manager_service_first_test/abilitymgr.gni
+++ b/test/unittest/ability_manager_service_first_test/abilitymgr.gni
@@ -44,7 +44,7 @@ abilityms_files = [
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/base_extension_record.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-  "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+  "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
diff --git a/test/unittest/ability_manager_service_fourteenth_test/BUILD.gn b/test/unittest/ability_manager_service_fourteenth_test/BUILD.gn
index 19d5f34816..975b7a59d7 100644
--- a/test/unittest/ability_manager_service_fourteenth_test/BUILD.gn
+++ b/test/unittest/ability_manager_service_fourteenth_test/BUILD.gn
@@ -124,7 +124,7 @@ ohos_unittest("ability_manager_service_fourteenth_test") {
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-    "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+    "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_info.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/free_install_observer_manager.cpp",
diff --git a/test/unittest/ability_manager_service_second_test/BUILD.gn b/test/unittest/ability_manager_service_second_test/BUILD.gn
index 83dc074e21..b5e71a009b 100644
--- a/test/unittest/ability_manager_service_second_test/BUILD.gn
+++ b/test/unittest/ability_manager_service_second_test/BUILD.gn
@@ -126,7 +126,7 @@ ohos_unittest("ability_manager_service_second_test") {
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-    "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+    "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_info.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/free_install_observer_manager.cpp",
diff --git a/test/unittest/ability_manager_service_sixth_test/abilitymgr.gni b/test/unittest/ability_manager_service_sixth_test/abilitymgr.gni
index e7ecb74d6b..04c9a15dce 100644
--- a/test/unittest/ability_manager_service_sixth_test/abilitymgr.gni
+++ b/test/unittest/ability_manager_service_sixth_test/abilitymgr.gni
@@ -44,7 +44,7 @@ abilityms_files = [
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/base_extension_record.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-  "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+  "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
diff --git a/test/unittest/ability_manager_service_third_test/abilitymgr.gni b/test/unittest/ability_manager_service_third_test/abilitymgr.gni
index 09494859de..bb4b482dfe 100644
--- a/test/unittest/ability_manager_service_third_test/abilitymgr.gni
+++ b/test/unittest/ability_manager_service_third_test/abilitymgr.gni
@@ -44,7 +44,7 @@ abilityms_files = [
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/base_extension_record.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-  "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+  "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
   "${ability_runtime_services_path}/abilitymgr/src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
diff --git a/test/unittest/ability_manager_service_thirteenth_test/BUILD.gn b/test/unittest/ability_manager_service_thirteenth_test/BUILD.gn
index cd7042eef1..a8fa9baae3 100644
--- a/test/unittest/ability_manager_service_thirteenth_test/BUILD.gn
+++ b/test/unittest/ability_manager_service_thirteenth_test/BUILD.gn
@@ -124,7 +124,7 @@ ohos_unittest("ability_manager_service_thirteenth_test") {
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-    "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+    "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_info.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/foreground_app_connection_manager/foreground_app_connection_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/free_install_observer_manager.cpp",
diff --git a/test/unittest/ui_extension/extension_record_manager_second_test/BUILD.gn b/test/unittest/ui_extension/extension_record_manager_second_test/BUILD.gn
index e52e5bedc8..1973e5c704 100644
--- a/test/unittest/ui_extension/extension_record_manager_second_test/BUILD.gn
+++ b/test/unittest/ui_extension/extension_record_manager_second_test/BUILD.gn
@@ -49,7 +49,7 @@ ohos_unittest("extension_record_manager_second_test") {
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_factory.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_record/extension_record_manager.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_running_timeout_monitor.cpp",
-    "${ability_runtime_services_path}/abilitymgr/src/bg_user_extension_monitor.cpp",
+    "${ability_runtime_services_path}/abilitymgr/src/background_user_extension_monitor.cpp",
     "${ability_runtime_services_path}/abilitymgr/src/extension_config.cpp",
     "${ability_runtime_services_path}/common/src/ffrt_task_handler_wrap.cpp",
     "${ability_runtime_services_path}/common/src/hisysevent_report.cpp",
diff --git a/test/unittest/ui_extension/extension_record_manager_second_test/extension_record_manager_second_test.cpp b/test/unittest/ui_extension/extension_record_manager_second_test/extension_record_manager_second_test.cpp
index b4135711bf..3306ea26bd 100644
--- a/test/unittest/ui_extension/extension_record_manager_second_test/extension_record_manager_second_test.cpp
+++ b/test/unittest/ui_extension/extension_record_manager_second_test/extension_record_manager_second_test.cpp
@@ -26,7 +26,7 @@
 #include "extension_record.h"
 #include "extension_record_manager.h"
 #include "extension_running_timeout_monitor.h"
-#include "bg_user_extension_monitor.h"
+#include "background_user_extension_monitor.h"
 #include "extension_config.h"
 #define inline
 #undef protected
@@ -1931,9 +1931,9 @@ HWTEST_F(ExtensionRunningTimeoutMonitorTest, OnExtensionStarted_0500, TestSize.L
     TAG_LOGI(AAFwkTag::TEST, "end.");
 }
 
-// ========== BgUserExtensionMonitor TDD Tests ==========
+// ========== BackgroundUserExtensionMonitor TDD Tests ==========
 
-class BgUserExtensionMonitorTest : public testing::Test {
+class BackgroundUserExtensionMonitorTest : public testing::Test {
 public:
     static void SetUpTestCase();
     static void TearDownTestCase();
@@ -1941,44 +1941,44 @@ public:
     void TearDown() override;
 };
 
-void BgUserExtensionMonitorTest::SetUpTestCase()
+void BackgroundUserExtensionMonitorTest::SetUpTestCase()
 {}
 
-void BgUserExtensionMonitorTest::TearDownTestCase()
+void BackgroundUserExtensionMonitorTest::TearDownTestCase()
 {}
 
-void BgUserExtensionMonitorTest::SetUp()
+void BackgroundUserExtensionMonitorTest::SetUp()
 {
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     monitor->cachedEvents_.clear();
 }
 
-void BgUserExtensionMonitorTest::TearDown()
+void BackgroundUserExtensionMonitorTest::TearDown()
 {
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     monitor->StopMonitor();
     monitor->cachedEvents_.clear();
 }
 
 /**
- * @tc.name: BgUserExtension_OnBgUserExtensionStarted_0100
- * @tc.desc: Test OnBgUserExtensionStarted stores event fields correctly.
+ * @tc.name: BackgroundUserExtension_OnBackgroundUserExtensionStarted_0100
+ * @tc.desc: Test OnBackgroundUserExtensionStarted stores event fields correctly.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_0100, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_OnBackgroundUserExtensionStarted_0100, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionCallerInfo callerInfo;
+    AAFwk::BackgroundUserExtensionCallerInfo callerInfo;
     callerInfo.callerUid = 200000100;
     callerInfo.callerUserId = 100;
     callerInfo.callerProcessName = "com.example.caller";
     callerInfo.callerBundleName = "com.example.caller";
 
-    monitor->OnBgUserExtensionStarted(callerInfo,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo,
         "com.example.callee", "com.example.callee",
         "ServiceExtension", "ServiceExtAbility", 100200);
 
@@ -1996,26 +1996,26 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_01
 }
 
 /**
- * @tc.name: BgUserExtension_OnBgUserExtensionStarted_0200
- * @tc.desc: Test OnBgUserExtensionStarted with multiple different events.
+ * @tc.name: BackgroundUserExtension_OnBackgroundUserExtensionStarted_0200
+ * @tc.desc: Test OnBackgroundUserExtensionStarted with multiple different events.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_0200, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_OnBackgroundUserExtensionStarted_0200, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionCallerInfo callerInfo;
+    AAFwk::BackgroundUserExtensionCallerInfo callerInfo;
     callerInfo.callerUid = 200000100;
     callerInfo.callerBundleName = "com.example.caller";
 
-    monitor->OnBgUserExtensionStarted(callerInfo,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo,
         "com.example.callee", "com.example.callee",
         "ServiceExtension", "ServiceExtAbility", 100200);
 
-    monitor->OnBgUserExtensionStarted(callerInfo,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo,
         "com.example.callee", "com.example.callee",
         "ShareExtension", "ShareExtAbility", 100200);
 
@@ -2025,22 +2025,22 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_02
 }
 
 /**
- * @tc.name: BgUserExtension_OnBgUserExtensionStarted_0300
- * @tc.desc: Test OnBgUserExtensionStarted dedupes by extensionTypeName + abilityName and increments cnt.
+ * @tc.name: BackgroundUserExtension_OnBackgroundUserExtensionStarted_0300
+ * @tc.desc: Test OnBackgroundUserExtensionStarted dedupes by extensionTypeName + abilityName and increments cnt.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_0300, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_OnBackgroundUserExtensionStarted_0300, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionCallerInfo callerInfo1;
+    AAFwk::BackgroundUserExtensionCallerInfo callerInfo1;
     callerInfo1.callerUid = 200000100;
     callerInfo1.callerBundleName = "com.example.caller1";
 
-    monitor->OnBgUserExtensionStarted(callerInfo1,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo1,
         "com.example.callee", "com.example.callee",
         "ServiceExtension", "ServiceExtAbility", 100200);
 
@@ -2048,11 +2048,11 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_03
     EXPECT_EQ(monitor->cachedEvents_.front().cnt, 1);
 
     // Second call with same extension type + ability name → dedupe, cnt++
-    AAFwk::BgUserExtensionCallerInfo callerInfo2;
+    AAFwk::BackgroundUserExtensionCallerInfo callerInfo2;
     callerInfo2.callerUid = 200000200;
     callerInfo2.callerBundleName = "com.example.caller2";
 
-    monitor->OnBgUserExtensionStarted(callerInfo2,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo2,
         "com.example.callee2", "com.example.callee2",
         "ServiceExtension", "ServiceExtAbility", 100300);
 
@@ -2068,30 +2068,30 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_03
 }
 
 /**
- * @tc.name: BgUserExtension_OnBgUserExtensionStarted_0400
- * @tc.desc: Test OnBgUserExtensionStarted discards event when cache is full (MAX_CACHED_EVENTS=5).
+ * @tc.name: BackgroundUserExtension_OnBackgroundUserExtensionStarted_0400
+ * @tc.desc: Test OnBackgroundUserExtensionStarted discards event when cache is full (MAX_CACHED_EVENTS=5).
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_0400, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_OnBackgroundUserExtensionStarted_0400, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionCallerInfo callerInfo;
+    AAFwk::BackgroundUserExtensionCallerInfo callerInfo;
     callerInfo.callerUid = 200000100;
     callerInfo.callerBundleName = "com.example.caller";
 
     for (int32_t i = 0; i < monitor->MAX_CACHED_EVENTS; i++) {
-        monitor->OnBgUserExtensionStarted(callerInfo,
+        monitor->OnBackgroundUserExtensionStarted(callerInfo,
             "com.example.callee" + std::to_string(i), "com.example.callee" + std::to_string(i),
             "ServiceExtension", "Ability" + std::to_string(i), 100200 + i);
     }
     EXPECT_EQ(monitor->cachedEvents_.size(), static_cast<size_t>(monitor->MAX_CACHED_EVENTS));
 
     // 6th event should be discarded
-    monitor->OnBgUserExtensionStarted(callerInfo,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo,
         "com.example.overflow", "com.example.overflow",
         "ServiceExtension", "OverflowAbility", 999999);
     EXPECT_EQ(monitor->cachedEvents_.size(), static_cast<size_t>(monitor->MAX_CACHED_EVENTS));
@@ -2109,27 +2109,27 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_OnBgUserExtensionStarted_04
 }
 
 /**
- * @tc.name: BgUserExtension_IsDuplicateEvent_0100
+ * @tc.name: BackgroundUserExtension_IsDuplicateEvent_0100
  * @tc.desc: Test IsDuplicateEvent returns true for same extensionTypeName + abilityName.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_IsDuplicateEvent_0100, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_IsDuplicateEvent_0100, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionEvent event;
+    AAFwk::BackgroundUserExtensionEvent event;
     event.calleeExtensionTypeName = "ServiceExtension";
     event.calleeAbilityName = "TestAbility";
     monitor->cachedEvents_.push_back(event);
 
-    AAFwk::BgUserExtensionEvent candidate;
+    AAFwk::BackgroundUserExtensionEvent candidate;
     candidate.calleeExtensionTypeName = "ServiceExtension";
     candidate.calleeAbilityName = "TestAbility";
 
-    std::list<AAFwk::BgUserExtensionEvent>::iterator dupIter;
+    std::list<AAFwk::BackgroundUserExtensionEvent>::iterator dupIter;
     EXPECT_TRUE(monitor->IsDuplicateEvent(candidate, dupIter));
     EXPECT_EQ(dupIter->calleeAbilityName, "TestAbility");
 
@@ -2137,69 +2137,69 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_IsDuplicateEvent_0100, Test
 }
 
 /**
- * @tc.name: BgUserExtension_IsDuplicateEvent_0200
+ * @tc.name: BackgroundUserExtension_IsDuplicateEvent_0200
  * @tc.desc: Test IsDuplicateEvent returns false for different extensionTypeName.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_IsDuplicateEvent_0200, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_IsDuplicateEvent_0200, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionEvent event;
+    AAFwk::BackgroundUserExtensionEvent event;
     event.calleeExtensionTypeName = "ServiceExtension";
     event.calleeAbilityName = "TestAbility";
     monitor->cachedEvents_.push_back(event);
 
-    AAFwk::BgUserExtensionEvent candidate;
+    AAFwk::BackgroundUserExtensionEvent candidate;
     candidate.calleeExtensionTypeName = "ShareExtension";
     candidate.calleeAbilityName = "TestAbility";
 
-    std::list<AAFwk::BgUserExtensionEvent>::iterator dupIter;
+    std::list<AAFwk::BackgroundUserExtensionEvent>::iterator dupIter;
     EXPECT_FALSE(monitor->IsDuplicateEvent(candidate, dupIter));
 
     TAG_LOGI(AAFwkTag::TEST, "end.");
 }
 
 /**
- * @tc.name: BgUserExtension_IsDuplicateEvent_0300
+ * @tc.name: BackgroundUserExtension_IsDuplicateEvent_0300
  * @tc.desc: Test IsDuplicateEvent returns false for different abilityName.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_IsDuplicateEvent_0300, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_IsDuplicateEvent_0300, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionEvent event;
+    AAFwk::BackgroundUserExtensionEvent event;
     event.calleeExtensionTypeName = "ServiceExtension";
     event.calleeAbilityName = "Ability1";
     monitor->cachedEvents_.push_back(event);
 
-    AAFwk::BgUserExtensionEvent candidate;
+    AAFwk::BackgroundUserExtensionEvent candidate;
     candidate.calleeExtensionTypeName = "ServiceExtension";
     candidate.calleeAbilityName = "Ability2";
 
-    std::list<AAFwk::BgUserExtensionEvent>::iterator dupIter;
+    std::list<AAFwk::BackgroundUserExtensionEvent>::iterator dupIter;
     EXPECT_FALSE(monitor->IsDuplicateEvent(candidate, dupIter));
 
     TAG_LOGI(AAFwkTag::TEST, "end.");
 }
 
 /**
- * @tc.name: BgUserExtension_ReportCachedEvents_0100
+ * @tc.name: BackgroundUserExtension_ReportCachedEvents_0100
  * @tc.desc: Test ReportCachedEvents with empty cache does nothing.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_ReportCachedEvents_0100, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_ReportCachedEvents_0100, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
     EXPECT_EQ(monitor->cachedEvents_.size(), static_cast<size_t>(0));
@@ -2210,18 +2210,18 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_ReportCachedEvents_0100, Te
 }
 
 /**
- * @tc.name: BgUserExtension_ReportCachedEvents_0200
+ * @tc.name: BackgroundUserExtension_ReportCachedEvents_0200
  * @tc.desc: Test ReportCachedEvents clears cache after reporting events.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_ReportCachedEvents_0200, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_ReportCachedEvents_0200, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionEvent event;
+    AAFwk::BackgroundUserExtensionEvent event;
     event.callerUid = 200000100;
     event.callerBundleName = "com.example.caller";
     event.calleeBundleName = "com.example.callee";
@@ -2239,15 +2239,15 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_ReportCachedEvents_0200, Te
 }
 
 /**
- * @tc.name: BgUserExtension_StartStopMonitor_0100
+ * @tc.name: BackgroundUserExtension_StartStopMonitor_0100
  * @tc.desc: Test StartMonitor and StopMonitor do not crash.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_StartStopMonitor_0100, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_StartStopMonitor_0100, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
     monitor->StartMonitor();
@@ -2259,24 +2259,24 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_StartStopMonitor_0100, Test
 }
 
 /**
- * @tc.name: BgUserExtension_BuildJsonInfo_0100
+ * @tc.name: BackgroundUserExtension_BuildJsonInfo_0100
  * @tc.desc: Test JSON string built from event contains all 7 fields.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_BuildJsonInfo_0100, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_BuildJsonInfo_0100, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
-    AAFwk::BgUserExtensionCallerInfo callerInfo;
+    AAFwk::BackgroundUserExtensionCallerInfo callerInfo;
     callerInfo.callerUid = 200000100;
     callerInfo.callerUserId = 100;
     callerInfo.callerProcessName = "com.example.caller";
     callerInfo.callerBundleName = "com.example.caller";
 
-    monitor->OnBgUserExtensionStarted(callerInfo,
+    monitor->OnBackgroundUserExtensionStarted(callerInfo,
         "com.example.callee", "com.example.callee",
         "ServiceExtension", "ServiceExtAbility", 100200);
 
@@ -2301,15 +2301,15 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_BuildJsonInfo_0100, TestSiz
 }
 
 /**
- * @tc.name: BgUserExtension_ConcurrentAccess_0100
- * @tc.desc: Test concurrent OnBgUserExtensionStarted does not crash.
+ * @tc.name: BackgroundUserExtension_ConcurrentAccess_0100
+ * @tc.desc: Test concurrent OnBackgroundUserExtensionStarted does not crash.
  * @tc.type: FUNC
  * @tc.require: issue
  */
-HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_ConcurrentAccess_0100, TestSize.Level1)
+HWTEST_F(BackgroundUserExtensionMonitorTest, BackgroundUserExtension_ConcurrentAccess_0100, TestSize.Level1)
 {
     TAG_LOGI(AAFwkTag::TEST, "begin.");
-    auto monitor = DelayedSingleton<AAFwk::BgUserExtensionMonitor>::GetInstance();
+    auto monitor = DelayedSingleton<AAFwk::BackgroundUserExtensionMonitor>::GetInstance();
     ASSERT_NE(monitor, nullptr);
 
     const int32_t threadCount = 10;
@@ -2317,10 +2317,10 @@ HWTEST_F(BgUserExtensionMonitorTest, BgUserExtension_ConcurrentAccess_0100, Test
 
     for (int32_t i = 0; i < threadCount; i++) {
         threads.emplace_back([monitor, i]() {
-            AAFwk::BgUserExtensionCallerInfo callerInfo;
+            AAFwk::BackgroundUserExtensionCallerInfo callerInfo;
             callerInfo.callerUid = 200000100 + i;
             callerInfo.callerBundleName = "com.example.caller" + std::to_string(i);
-            monitor->OnBgUserExtensionStarted(callerInfo,
+            monitor->OnBackgroundUserExtensionStarted(callerInfo,
                 "com.example.callee" + std::to_string(i),
                 "com.example.callee" + std::to_string(i),
                 "ServiceExtension",