diff --git a/components/power/los_pm.c b/components/power/los_pm.c
index e38dd336..4ebb1d3a 100644
--- a/components/power/los_pm.c
+++ b/components/power/los_pm.c
@@ -657,41 +657,6 @@ UINT32 LOS_PmLockRelease(const CHAR *name)
     return ret;
 }
 
-VOID OsPmFreezeTaskUnsafe(UINT32 taskID)
-{
-    UINT64 responseTime;
-    LosTaskCB *taskCB = OS_TCB_FROM_TID(taskID);
-
-    responseTime = GET_SORTLIST_VALUE(&taskCB->sortList);
-    OsDeleteSortLink(&taskCB->sortList, OS_SORT_LINK_TASK);
-    SET_SORTLIST_VALUE(&taskCB->sortList, responseTime);
-    taskCB->taskStatus |= OS_TASK_FALG_FREEZE;
-    return;
-}
-
-VOID OsPmUnfreezeTaskUnsafe(UINT32 taskID)
-{
-    LosTaskCB *taskCB = OS_TCB_FROM_TID(taskID);
-    UINT64 currTime, responseTime;
-    UINT32 remainTick;
-
-    taskCB->taskStatus &= ~OS_TASK_FALG_FREEZE;
-    currTime = OsGetCurrSchedTimeCycle();
-    responseTime = GET_SORTLIST_VALUE(&taskCB->sortList);
-    if (responseTime > currTime) {
-        remainTick = ((responseTime - currTime) + OS_CYCLE_PER_TICK - 1) / OS_CYCLE_PER_TICK;
-        OsAdd2SortLink(&taskCB->sortList, currTime, remainTick, OS_SORT_LINK_TASK);
-        return;
-    }
-
-    SET_SORTLIST_VALUE(&taskCB->sortList, OS_SORT_LINK_INVALID_TIME);
-    if (taskCB->taskStatus & OS_TASK_STATUS_PEND) {
-        LOS_ListDelete(&taskCB->pendList);
-    }
-    taskCB->taskStatus &= ~(OS_TASK_STATUS_DELAY | OS_TASK_STATUS_PEND_TIME | OS_TASK_STATUS_PEND);
-    return;
-}
-
 STATIC VOID OsPmSwtmrHandler(UINT32 arg)
 {
     const CHAR *name = (const CHAR *)arg;
diff --git a/components/power/los_pm.h b/components/power/los_pm.h
index 762c7b4a..f421219e 100644
--- a/components/power/los_pm.h
+++ b/components/power/los_pm.h
@@ -233,43 +233,11 @@ UINT32 OsPmInit(VOID);
  * <ul><li>los_pm.h: the header file that contains the API declaration.</li></ul>
  * @see
  */
+#if (LOSCFG_KERNEL_PM == 1)
 BOOL OsIsPmMode(VOID);
-
-/**
- * @ingroup los_pm
- * @brief Freeze delay tasks, internal interfaces between modules.
- *
- * @par Description:
- * This API is used to freeze delay tasks.
- *
- * @attention None.
- *
- * @param taskID [IN] task ID.
- *
- * @retval None.
- * @par Dependency:
- * <ul><li>los_pm.h: the header file that contains the API declaration.</li></ul>
- * @see OsPmUnfreezeTaskUnsafe
- */
-VOID OsPmFreezeTaskUnsafe(UINT32 taskID);
-
-/**
- * @ingroup los_pm
- * @brief Unfreeze delayed tasks, internal interface between modules.
- *
- * @par Description:
- * This API is used to unfreeze delayed tasks.
- *
- * @attention None.
- *
- * @param taskID [IN] task ID.
- *
- * @retval None.
- * @par Dependency:
- * <ul><li>los_pm.h: the header file that contains the API declaration.</li></ul>
- * @see OsPmFreezeTaskUnsafe
- */
-VOID OsPmUnfreezeTaskUnsafe(UINT32 taskID);
+#else
+#define OsIsPmMode() (0)
+#endif
 
 /**
  * @ingroup los_pm
diff --git a/kernel/include/los_sched.h b/kernel/include/los_sched.h
index df26da61..7c7df691 100644
--- a/kernel/include/los_sched.h
+++ b/kernel/include/los_sched.h
@@ -79,6 +79,10 @@ VOID OsSchedYield(VOID);
 
 VOID OsSchedTaskExit(LosTaskCB *taskCB);
 
+VOID OsSchedSuspend(LosTaskCB *taskCB);
+
+BOOL OsSchedResume(LosTaskCB *taskCB);
+
 VOID OsSchedTick(VOID);
 
 UINT32 OsSchedInit(VOID);
diff --git a/kernel/src/los_sched.c b/kernel/src/los_sched.c
index 9d295218..421396d8 100644
--- a/kernel/src/los_sched.c
+++ b/kernel/src/los_sched.c
@@ -34,9 +34,7 @@
 #include "los_tick.h"
 #include "los_debug.h"
 #include "los_hook.h"
-#if (LOSCFG_KERNEL_PM == 1)
 #include "los_pm.h"
-#endif
 
 #ifdef __cplusplus
 #if __cplusplus
@@ -222,7 +220,6 @@ STATIC INLINE VOID OsSchedSetNextExpireTime(UINT64 startTime, UINT32 responseID,
 
 VOID OsSchedUpdateExpireTime(UINT64 startTime, BOOL timeUpdate)
 {
-    BOOL isPmMode = FALSE;
     UINT64 endTime;
     LosTaskCB *runTask = g_losTask.runTask;
 
@@ -230,9 +227,7 @@ VOID OsSchedUpdateExpireTime(UINT64 startTime, BOOL timeUpdate)
         return;
     }
 
-#if (LOSCFG_KERNEL_PM == 1)
-    isPmMode = OsIsPmMode();
-#endif
+    BOOL isPmMode = OsIsPmMode();
     if ((runTask->taskID != g_idleTaskID) && !isPmMode) {
         INT32 timeSlice = (runTask->timeSlice <= OS_TIME_SLICE_MIN) ? OS_SCHED_TIME_SLICES : runTask->timeSlice;
         endTime = startTime + timeSlice;
@@ -415,6 +410,66 @@ VOID OsSchedTaskWake(LosTaskCB *resumedTask)
     }
 }
 
+STATIC VOID OsSchedFreezeTask(LosTaskCB *taskCB)
+{
+    UINT64 responseTime = GET_SORTLIST_VALUE(&taskCB->sortList);
+    OsDeleteSortLink(&taskCB->sortList, OS_SORT_LINK_TASK);
+    SET_SORTLIST_VALUE(&taskCB->sortList, responseTime);
+    taskCB->taskStatus |= OS_TASK_FALG_FREEZE;
+    return;
+}
+
+STATIC VOID OsSchedUnfreezeTask(LosTaskCB *taskCB)
+{
+    UINT64 currTime, responseTime;
+    UINT32 remainTick;
+
+    taskCB->taskStatus &= ~OS_TASK_FALG_FREEZE;
+    currTime = OsGetCurrSchedTimeCycle();
+    responseTime = GET_SORTLIST_VALUE(&taskCB->sortList);
+    if (responseTime > currTime) {
+        remainTick = ((responseTime - currTime) + OS_CYCLE_PER_TICK - 1) / OS_CYCLE_PER_TICK;
+        OsAdd2SortLink(&taskCB->sortList, currTime, remainTick, OS_SORT_LINK_TASK);
+        return;
+    }
+
+    SET_SORTLIST_VALUE(&taskCB->sortList, OS_SORT_LINK_INVALID_TIME);
+    if (taskCB->taskStatus & OS_TASK_STATUS_PEND) {
+        LOS_ListDelete(&taskCB->pendList);
+    }
+    taskCB->taskStatus &= ~(OS_TASK_STATUS_DELAY | OS_TASK_STATUS_PEND_TIME | OS_TASK_STATUS_PEND);
+    return;
+}
+
+VOID OsSchedSuspend(LosTaskCB *taskCB)
+{
+    if (taskCB->taskStatus & OS_TASK_STATUS_READY) {
+        OsSchedTaskDeQueue(taskCB);
+    }
+
+    if ((taskCB->taskStatus & (OS_TASK_STATUS_PEND_TIME | OS_TASK_STATUS_DELAY)) && OsIsPmMode()) {
+        OsSchedFreezeTask(taskCB);
+    }
+
+    taskCB->taskStatus |= OS_TASK_STATUS_SUSPEND;
+    OsHookCall(LOS_HOOK_TYPE_MOVEDTASKTOSUSPENDEDLIST, taskCB);
+}
+
+BOOL OsSchedResume(LosTaskCB *taskCB)
+{
+    if (taskCB->taskStatus & OS_TASK_FALG_FREEZE) {
+        OsSchedUnfreezeTask(taskCB);
+    }
+
+    taskCB->taskStatus &= (~OS_TASK_STATUS_SUSPEND);
+    if (!(taskCB->taskStatus & (OS_TASK_STATUS_DELAY | OS_TASK_STATUS_PEND))) {
+        OsSchedTaskEnQueue(taskCB);
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
 BOOL OsSchedModifyTaskSchedParam(LosTaskCB *taskCB, UINT16 priority)
 {
     if (taskCB->taskStatus & OS_TASK_STATUS_READY) {
diff --git a/kernel/src/los_task.c b/kernel/src/los_task.c
index d4d380ac..c2dbd3ee 100644
--- a/kernel/src/los_task.c
+++ b/kernel/src/los_task.c
@@ -71,11 +71,6 @@
 #define UWROLLNUMDEC(NUMBER)  \
             ((NUMBER) = ((NUMBER) - 1))
 
-
-#define OS_CHECK_TASK_BLOCK                     (OS_TASK_STATUS_DELAY |  \
-                                                 OS_TASK_STATUS_PEND |   \
-                                                 OS_TASK_STATUS_SUSPEND)
-
 /**
  * @ingroup los_task
  * @brief check task id's validation
@@ -830,20 +825,11 @@ LITE_OS_SEC_TEXT_INIT UINT32 LOS_TaskResume(UINT32 taskID)
         OS_GOTO_ERREND();
     }
 
-#if (LOSCFG_KERNEL_PM == 1)
-    if (tempStatus & OS_TASK_FALG_FREEZE) {
-        OsPmUnfreezeTaskUnsafe(taskID);
-    }
-#endif
-
-    taskCB->taskStatus &= (~OS_TASK_STATUS_SUSPEND);
-    if (!(taskCB->taskStatus & OS_CHECK_TASK_BLOCK)) {
-        OsSchedTaskEnQueue(taskCB);
-        if (g_taskScheduled) {
-            LOS_IntRestore(intSave);
-            LOS_Schedule();
-            return LOS_OK;
-        }
+    BOOL needSched = OsSchedResume(taskCB);
+    if (needSched && g_taskScheduled) {
+        LOS_IntRestore(intSave);
+        LOS_Schedule();
+        return LOS_OK;
     }
 
     LOS_IntRestore(intSave);
@@ -897,18 +883,8 @@ LITE_OS_SEC_TEXT_INIT UINT32 LOS_TaskSuspend(UINT32 taskID)
         OS_GOTO_ERREND();
     }
 
-    if (tempStatus & OS_TASK_STATUS_READY) {
-        OsSchedTaskDeQueue(taskCB);
-    }
+    OsSchedSuspend(taskCB);
 
-#if (LOSCFG_KERNEL_PM == 1)
-    if ((tempStatus & (OS_TASK_STATUS_PEND_TIME | OS_TASK_STATUS_DELAY)) && OsIsPmMode()) {
-        OsPmFreezeTaskUnsafe(taskID);
-    }
-#endif
-
-    taskCB->taskStatus |= OS_TASK_STATUS_SUSPEND;
-    OsHookCall(LOS_HOOK_TYPE_MOVEDTASKTOSUSPENDEDLIST, taskCB);
     if (taskID == g_losTask.runTask->taskID) {
         LOS_IntRestore(intSave);
         LOS_Schedule();