diff --git a/System/sv_task.c b/System/sv_task.c
index a5cd523b..2e1af8cf 100644
--- a/System/sv_task.c
+++ b/System/sv_task.c
@@ -373,7 +373,6 @@ void su_yield_tasking(void)
  */
 void su_delay(s_delay_t tick)
 {
-	if(!tick) return;
 	s_task_current->timer = tick;
 	if(!s_sign_schedule.every[0]){ /* 阻塞延时 */
 		if(~tick) sv_insert_timer_list();