diff --git a/frameworks/ability_lite/include/ability_scheduler.h b/frameworks/ability_lite/include/ability_scheduler.h
index 7cd4be6887e25ffda11cdfb65fa6bc1d5554e612..2fa87af32e02eb67f926cb8459af2c41b560fbcd 100755
--- a/frameworks/ability_lite/include/ability_scheduler.h
+++ b/frameworks/ability_lite/include/ability_scheduler.h
@@ -25,6 +25,7 @@
 #include "want.h"
 
 namespace OHOS {
+const int32_t DEFAULT_IPC_SIZE = 200;
 class Scheduler {
 public:
     virtual ~Scheduler() = default;
diff --git a/frameworks/ability_lite/src/ability_event_handler.cpp b/frameworks/ability_lite/src/ability_event_handler.cpp
index 87b8477f499880c4a52bfb5ad6c32f72ba7549ff..ae548a4a7af775acf5b2c1b26523a1a39c4abb30 100644
--- a/frameworks/ability_lite/src/ability_event_handler.cpp
+++ b/frameworks/ability_lite/src/ability_event_handler.cpp
@@ -37,8 +37,8 @@ AbilityEventHandler::~AbilityEventHandler()
 
 void AbilityEventHandler::Run()
 {
+    (void) pthread_mutex_lock(&queueMutex_);
     while (!quit_) {
-        (void) pthread_mutex_lock(&queueMutex_);
         if (taskQueue_.empty()) {
             (void) pthread_cond_wait(&pthreadCond_, &queueMutex_);
         }
@@ -46,16 +46,18 @@ void AbilityEventHandler::Run()
         taskQueue_.pop();
         (void) pthread_mutex_unlock(&queueMutex_);
         task();
+        (void) pthread_mutex_lock(&queueMutex_);
     }
+    (void) pthread_mutex_unlock(&queueMutex_);
 }
 
 void AbilityEventHandler::PostTask(const Task& task)
 {
     (void) pthread_mutex_lock(&queueMutex_);
     taskQueue_.push(task);
-    (void) pthread_mutex_unlock(&queueMutex_);
 
     (void) pthread_cond_signal(&pthreadCond_);
+    (void) pthread_mutex_unlock(&queueMutex_);
 }
 
 void AbilityEventHandler::PostQuit()
diff --git a/frameworks/ability_lite/src/ability_scheduler.cpp b/frameworks/ability_lite/src/ability_scheduler.cpp
index 536ccfda096c0d5ddc27775b77f05bf8be14e82e..c273e87f5deaf85d2195f1d2f4eafb0b8d5e1eca 100644
--- a/frameworks/ability_lite/src/ability_scheduler.cpp
+++ b/frameworks/ability_lite/src/ability_scheduler.cpp
@@ -77,6 +77,11 @@ int32_t AbilityScheduler::AmsCallback(const IpcContext* context, void *ipcMsg, I
                 }
             }
             scheduler->PerformAppInit(appInfo);
+            IpcIo reply;
+            uint8_t tmpData[DEFAULT_IPC_SIZE];
+            IpcIoInit(&reply, tmpData, DEFAULT_IPC_SIZE, 1);
+            IpcIoPushInt32(&reply, 0);
+            SendReply(nullptr, ipcMsg, &reply);
             break;
         }
         case SCHEDULER_ABILITY_LIFECYCLE: {
diff --git a/services/abilitymgr_lite/src/client/ability_thread_client.cpp b/services/abilitymgr_lite/src/client/ability_thread_client.cpp
index 4d01aaa3c4a71d46dd630bc529480134b6c42361..25143f739bd4cfc9d5eefd3ea120122f57ee3ac1 100644
--- a/services/abilitymgr_lite/src/client/ability_thread_client.cpp
+++ b/services/abilitymgr_lite/src/client/ability_thread_client.cpp
@@ -127,9 +127,10 @@ AbilityMsStatus AbilityThreadClient::AppInitTransaction(const BundleInfo &bundle
             IpcIoPushString(&req, bundleInfo.moduleInfos[i].moduleName);
         }
     }
+    IpcIo reply;
     uintptr_t ptr;
     if (Transact(nullptr, svcIdentity_, SCHEDULER_APP_INIT, &req,
-        nullptr, LITEIPC_FLAG_DEFAULT, &ptr) != LITEIPC_OK) {
+        &reply, LITEIPC_FLAG_DEFAULT, &ptr) != LITEIPC_OK) {
         return  AbilityMsStatus::AppTransanctStatus("app init ipc error");
     }
     FreeBuffer(nullptr, reinterpret_cast<void *>(ptr));