diff --git a/kernel/include/los_tick.h b/kernel/include/los_tick.h
index a11931f8..d4ee0cce 100644
--- a/kernel/include/los_tick.h
+++ b/kernel/include/los_tick.h
@@ -130,6 +130,10 @@ extern UINT64 LOS_SysCycleGet(VOID);
 #define OS_SYS_NS_TO_CYCLE(time, freq) (((time) / OS_SYS_NS_PER_SECOND) * (freq) +     \
     (time % OS_SYS_NS_PER_SECOND) * (freq) / OS_SYS_NS_PER_SECOND)
 
+#define OS_SYS_TICK_TO_CYCLE(ticks) (((UINT64)(ticks) * g_sysClock) / LOSCFG_BASE_CORE_TICK_PER_SECOND)
+
+#define OS_SYS_CYCLE_TO_TICK(cycle) ((((UINT64)(cycle)) * LOSCFG_BASE_CORE_TICK_PER_SECOND) / g_sysClock)
+
 /**
  * @ingroup los_tick
  * System time basic function error code: Null pointer.
diff --git a/kernel/src/los_sched.c b/kernel/src/los_sched.c
index 9d295218..0fc34bfe 100644
--- a/kernel/src/los_sched.c
+++ b/kernel/src/los_sched.c
@@ -92,13 +92,17 @@ VOID OsSchedResetSchedResponseTime(UINT64 responseTime)
 
 #if (LOSCFG_BASE_CORE_TICK_WTIMER == 0)
 STATIC UINT64 g_schedTimerBase;
+STATIC BOOL g_tickTimerBaseUpdate = FALSE;
 
 VOID OsSchedUpdateSchedTimeBase(VOID)
 {
     UINT32 period = 0;
 
-    (VOID)HalGetTickCycle(&period);
-    g_schedTimerBase += period;
+    if (g_tickTimerBaseUpdate == FALSE) {
+        (VOID)HalGetTickCycle(&period);
+        g_schedTimerBase += period;
+    }
+    g_tickTimerBaseUpdate = FALSE;
 }
 
 VOID OsSchedTimerBaseReset(UINT64 currTime)
@@ -124,6 +128,7 @@ UINT64 OsGetCurrSysTimeCycle(VOID)
         /* Turn the timer count */
         g_schedTimerBase += period;
         schedTime = g_schedTimerBase + time;
+        g_tickTimerBaseUpdate = TRUE;
     }
 
     LOS_ASSERT(schedTime >= oldSchedTime);
@@ -145,22 +150,11 @@ STATIC INLINE VOID OsTimeSliceUpdate(LosTaskCB *taskCB, UINT64 currTime)
     taskCB->startTime = currTime;
 }
 
-STATIC INLINE VOID OsSchedTickReload(UINT64 nextResponseTime, UINT32 responseID, BOOL isTimeSlice, BOOL timeUpdate)
+STATIC INLINE VOID OsSchedTickReload(UINT64 currTime, UINT64 nextResponseTime, UINT32 responseID,
+                                     BOOL isTimeSlice, BOOL timeUpdate)
 {
-    UINT64 currTime, nextExpireTime;
-    UINT32 usedTime;
-
-    currTime = OsGetCurrSchedTimeCycle();
-    if (g_tickStartTime != 0) {
-        usedTime = currTime - g_tickStartTime;
-        g_tickStartTime = 0;
-    } else {
-        usedTime = 0;
-    }
-
-    if ((nextResponseTime > usedTime) && ((nextResponseTime - usedTime) > OS_TICK_RESPONSE_PRECISION)) {
-        nextResponseTime -= usedTime;
-    } else {
+    UINT64 nextExpireTime;
+    if (nextResponseTime < OS_TICK_RESPONSE_PRECISION) {
         nextResponseTime = OS_TICK_RESPONSE_PRECISION;
     }
 
@@ -190,8 +184,10 @@ STATIC INLINE VOID OsSchedSetNextExpireTime(UINT64 startTime, UINT32 responseID,
     UINT64 nextExpireTime;
     UINT64 nextResponseTime = 0;
     BOOL isTimeSlice = FALSE;
+    (VOID)startTime;
 
-    nextExpireTime = OsGetNextExpireTime(startTime);
+    UINT64 currTime = OsGetCurrSchedTimeCycle();
+    nextExpireTime = OsGetNextExpireTime(currTime);
     /* The response time of the task time slice is aligned to the next response time in the delay queue */
     if ((nextExpireTime > taskEndTime) && ((nextExpireTime - taskEndTime) > OS_SCHED_MINI_PERIOD)) {
         nextExpireTime = taskEndTime;
@@ -200,7 +196,7 @@ STATIC INLINE VOID OsSchedSetNextExpireTime(UINT64 startTime, UINT32 responseID,
 
     if ((g_schedResponseTime > nextExpireTime) &&
         ((g_schedResponseTime - nextExpireTime) >= OS_TICK_RESPONSE_PRECISION)) {
-        nextResponseTime = nextExpireTime - startTime;
+        nextResponseTime = nextExpireTime - currTime;
         if (nextResponseTime > OS_TICK_RESPONSE_TIME_MAX) {
             if (SchedRealSleepTimeSet != NULL) {
                 SchedRealSleepTimeSet(nextResponseTime);
@@ -217,7 +213,7 @@ STATIC INLINE VOID OsSchedSetNextExpireTime(UINT64 startTime, UINT32 responseID,
         return;
     }
 
-    OsSchedTickReload(nextResponseTime, responseID, isTimeSlice, timeUpdate);
+    OsSchedTickReload(currTime, nextResponseTime, responseID, isTimeSlice, timeUpdate);
 }
 
 VOID OsSchedUpdateExpireTime(UINT64 startTime, BOOL timeUpdate)
diff --git a/kernel/src/los_sortlink.c b/kernel/src/los_sortlink.c
index 8d8073f7..a7fc0de4 100644
--- a/kernel/src/los_sortlink.c
+++ b/kernel/src/los_sortlink.c
@@ -115,7 +115,7 @@ VOID OsAdd2SortLink(SortLinkList *node, UINT64 startTime, UINT32 waitTicks, Sort
     }
 
     intSave = LOS_IntLock();
-    SET_SORTLIST_VALUE(node, startTime + (UINT64)waitTicks * OS_CYCLE_PER_TICK);
+    SET_SORTLIST_VALUE(node, startTime + OS_SYS_TICK_TO_CYCLE(waitTicks));
     OsAddNode2SortLink(sortLinkHeader, node);
     LOS_IntRestore(intSave);
 }
diff --git a/kernel/src/los_swtmr.c b/kernel/src/los_swtmr.c
index 8f0ed3b9..75451a59 100644
--- a/kernel/src/los_swtmr.c
+++ b/kernel/src/los_swtmr.c
@@ -123,8 +123,8 @@ LITE_OS_SEC_TEXT_INIT UINT32 OsSwtmrTaskCreate(VOID)
 STATIC UINT64 OsSwtmrCalcStartTime(UINT64 currTime, SWTMR_CTRL_S *swtmr, const SWTMR_CTRL_S *alignSwtmr)
 {
     UINT64 usedTime, startTime;
-    UINT64 alignEnd = (UINT64)alignSwtmr->uwInterval * OS_CYCLE_PER_TICK;
-    UINT64 swtmrTime = (UINT64)swtmr->uwInterval * OS_CYCLE_PER_TICK;
+    UINT64 alignEnd = OS_SYS_TICK_TO_CYCLE(alignSwtmr->uwInterval);
+    UINT64 swtmrTime = OS_SYS_TICK_TO_CYCLE(swtmr->uwInterval);
     UINT64 remainTime = OsSortLinkGetRemainTime(currTime, &alignSwtmr->stSortList);
     if (remainTime == 0) {
         startTime = GET_SORTLIST_VALUE(&alignSwtmr->stSortList);
diff --git a/kernel/src/los_tick.c b/kernel/src/los_tick.c
index de690281..95d61476 100644
--- a/kernel/src/los_tick.c
+++ b/kernel/src/los_tick.c
@@ -72,7 +72,7 @@ Return      : current tick
 *****************************************************************************/
 LITE_OS_SEC_TEXT_MINOR UINT64 LOS_TickCountGet(VOID)
 {
-    return OsGetCurrSchedTimeCycle() / OS_CYCLE_PER_TICK;
+    return OS_SYS_CYCLE_TO_TICK(OsGetCurrSchedTimeCycle());
 }
 
 /*****************************************************************************