diff --git a/rtos/code/driver/na51089/source/mcu/sf_led.c b/rtos/code/driver/na51089/source/mcu/sf_led.c
index 970194978..7024bba66 100755
--- a/rtos/code/driver/na51089/source/mcu/sf_led.c
+++ b/rtos/code/driver/na51089/source/mcu/sf_led.c
@@ -289,7 +289,7 @@ THREAD_RETTYPE sf_led_thread(void *arg)
             }
             #endif
         }
-        vos_util_delay_ms(10);
+        vos_util_delay_ms(2);
     }
     
     printf("[%s:%d] e \n", __FUNCTION__, __LINE__);