diff --git a/src/util/src/ttimer.c b/src/util/src/ttimer.c
index baf396f030075a608a038dde555c79339cda116f..0222a6d80a3f36bacde9847b1cc326fe22aa389a 100644
--- a/src/util/src/ttimer.c
+++ b/src/util/src/ttimer.c
@@ -560,37 +560,6 @@ void taosTmrCleanUp(void* handle) {
   tmrDebug("%s timer controller is cleaned up.", ctrl->label);
   ctrl->label[0] = 0;
 
-  // cancel all timers of this controller
-  for (size_t i = 0; i < timerMap.size; i++) {
-    timer_list_t* list = timerMap.slots + i;
-    lockTimerList(list);
-
-    tmr_obj_t* t = list->timers;
-    tmr_obj_t* prev = NULL;
-    while (t != NULL) {
-      tmr_obj_t* next = t->mnext;
-      if (t->ctrl != ctrl) {
-        prev = t;
-        t = next;
-        continue;
-      }
-
-      uint8_t state = atomic_val_compare_exchange_8(&t->state, TIMER_STATE_WAITING, TIMER_STATE_CANCELED);
-      if (state == TIMER_STATE_WAITING) {
-        removeFromWheel(t);
-      }
-      timerDecRef(t);
-      if (prev == NULL) {
-        list->timers = next;
-      } else {
-        prev->mnext = next;
-      }
-      t = next;
-    }
-
-    unlockTimerList(list);
-  }
-
   pthread_mutex_lock(&tmrCtrlMutex);
   ctrl->next = unusedTmrCtrl;
   numOfTmrCtrl--;