diff --git a/applications/main.c b/applications/main.c
index 670032d..ac9076b 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -113,6 +113,7 @@ int _Self_Check_Mode (void)
     LED_STOP (r);
     LED_STOP (g);
     LED_STOP (y);
+    rt_thread_mdelay (500);
     LED_CTRL (g, "500,2500", 1);
     LED_START (g);
     rt_thread_mdelay (1000);
@@ -291,7 +292,7 @@ int main (void)
 
                         if (SysControl.last_status == kSelfCheckEvent)
                         {
-                            rt_thread_mdelay (2000);
+                            rt_thread_mdelay (4000); //1000 * 3 + 4000 = 7000//国标要求7s-30s动作
                             LOG_I ("自检电磁阀动作");
                             EMV_CLOSE_VALVE;
                             LOG_I ("自检风机动作");