diff --git a/HISTORY b/HISTORY
index 2ff1c94..9f01486 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,7 +1,8 @@
 
-Version 1.55  2022-01-09
+Version 1.55  2022-01-12
   * fastcommon php extension adapt to php 8
   * function fast_mblock_batch_alloc changed
+  * add function sched_delay_free_ptr
 
 Version 1.54  2021-12-23
   * fast_allocator.[hc]: correct reclaim_interval logic
diff --git a/src/sched_thread.c b/src/sched_thread.c
index 804b396..e140433 100644
--- a/src/sched_thread.c
+++ b/src/sched_thread.c
@@ -963,3 +963,16 @@ uint32_t sched_generate_next_id()
 {
     return ++next_id;
 }
+
+static int sched_free_ptr_func(void *ptr)
+{
+    free(ptr);
+    return 0;
+}
+
+int sched_delay_free_ptr(void *ptr, const int delay_seconds)
+{
+    const bool new_thread = false;
+    return sched_add_delay_task_ex(schedule_context, sched_free_ptr_func,
+            ptr, delay_seconds, new_thread);
+}
diff --git a/src/sched_thread.h b/src/sched_thread.h
index e22971e..1647983 100644
--- a/src/sched_thread.h
+++ b/src/sched_thread.h
@@ -168,6 +168,15 @@ int sched_add_delay_task(TaskFunc task_func, void *func_args,
         const int delay_seconds, const bool new_thread);
 
 
+/** delay free a pointer
+ *  parameters:
+ *  	     ptr: the ptr to free
+ *  	     delay_seconds: delay seconds to free the ptr
+ * return: error no, 0 for success, != 0 fail
+*/
+int sched_delay_free_ptr(void *ptr, const int delay_seconds);
+
+
 /** init the schedule context
  *  parameters:
  *  	     pContext: store the ScheduleContext pointer