diff --git a/kernel/include/los_task.h b/kernel/include/los_task.h
index ec05e216..786f4a31 100644
--- a/kernel/include/los_task.h
+++ b/kernel/include/los_task.h
@@ -1503,6 +1503,11 @@ typedef struct {
     LOSCFG_TASK_STRUCT_EXTENSION                          /**< Task extension field */
 } LosTaskCB;
 
+STATIC INLINE BOOL OsTaskIsExit(const LosTaskCB *taskCB)
+{
+    return ((taskCB->taskStatus & OS_TASK_STATUS_EXIT) != 0);
+}
+
 typedef struct {
     LosTaskCB   *runTask;
     LosTaskCB   *newTask;
diff --git a/kernel/src/los_sched.c b/kernel/src/los_sched.c
index b60b3f4f..aaa33357 100644
--- a/kernel/src/los_sched.c
+++ b/kernel/src/los_sched.c
@@ -268,6 +268,7 @@ VOID OsSchedTaskExit(LosTaskCB *taskCB)
         OsDeleteSortLink(&taskCB->sortList);
         taskCB->taskStatus &= ~(OS_TASK_STATUS_DELAY | OS_TASK_STATUS_PEND_TIME);
     }
+    taskCB->taskStatus |= OS_TASK_STATUS_EXIT;
 }
 
 VOID OsSchedYield(VOID)
diff --git a/kernel/src/los_task.c b/kernel/src/los_task.c
index 16ccff5d..5ec570a1 100644
--- a/kernel/src/los_task.c
+++ b/kernel/src/los_task.c
@@ -146,7 +146,7 @@ STATIC VOID OsRecycleTaskResources(LosTaskCB *taskCB, UINTPTR *stackPtr)
         taskCB->topOfStack = (UINT32)NULL;
         taskCB->taskStatus &= ~OS_TASK_FLAG_STACK_FREE;
     }
-    if (!(taskCB->taskStatus & OS_TASK_STATUS_EXIT)) {
+    if (!(taskCB->taskStatus & OS_TASK_FLAG_JOINABLE)) {
         OsInsertTCBToFreeList(taskCB);
     }
 }
@@ -164,7 +164,7 @@ STATIC VOID OsRecyleFinishedTask(VOID)
         stackPtr = 0;
         OsRecycleTaskResources(taskCB, &stackPtr);
         LOS_IntRestore(intSave);
-        
+
         (VOID)LOS_MemFree(OS_TASK_STACK_ADDR, (VOID *)stackPtr);
         intSave = LOS_IntLock();
     }
@@ -931,7 +931,6 @@ STATIC VOID OsTaskJoinPostUnsafe(LosTaskCB *taskCB)
             resumedTask = OS_TCB_FROM_PENDLIST(LOS_DL_LIST_FIRST(&(taskCB->joinList)));
             OsSchedTaskWake(resumedTask);
         }
-        taskCB->taskStatus |= OS_TASK_STATUS_EXIT;
     }
 }
 
@@ -1003,7 +1002,7 @@ LITE_OS_SEC_TEXT_INIT UINT32 LOS_TaskJoin(UINT32 taskID, UINTPTR *retval)
         }
 
         intSave = LOS_IntLock();
-        taskCB->taskStatus &= ~OS_TASK_STATUS_EXIT;
+        taskCB->taskStatus &= ~OS_TASK_FLAG_JOINABLE;
         OsRecycleTaskResources(taskCB, &stackPtr);
         LOS_IntRestore(intSave);
         (VOID)LOS_MemFree(OS_TASK_STACK_ADDR, (VOID *)stackPtr);
@@ -1101,8 +1100,8 @@ LITE_OS_SEC_TEXT_INIT UINT32 LOS_TaskDelete(UINT32 taskID)
     }
 
     OsHookCall(LOS_HOOK_TYPE_TASK_DELETE, taskCB);
-    OsSchedTaskExit(taskCB);
     OsTaskJoinPostUnsafe(taskCB);
+    OsSchedTaskExit(taskCB);
 
     LOS_EventDestroy(&(taskCB->event));
     taskCB->event.uwEventID = OS_NULL_INT;
@@ -1122,7 +1121,7 @@ LITE_OS_SEC_TEXT_INIT UINT32 LOS_TaskDelete(UINT32 taskID)
     LOSCFG_TASK_DELETE_EXTENSION_HOOK(taskCB);
 
     if (taskCB->taskStatus & OS_TASK_STATUS_RUNNING) {
-        if (!(taskCB->taskStatus & OS_TASK_STATUS_EXIT)) {
+        if (!(taskCB->taskStatus & OS_TASK_FLAG_JOINABLE)) {
             taskCB->taskStatus |= OS_TASK_STATUS_UNUSED;
             OsRunningTaskDelete(taskID, taskCB);
         }