diff --git a/source/app/app_config.c b/source/app/app_config.c
index 13a72f0..e74ab4b 100644
--- a/source/app/app_config.c
+++ b/source/app/app_config.c
@@ -229,18 +229,4 @@ void L3_set_power_mode(U8 mode)
 	// 	}
 	// }
 	R.power_mode = mode;
-	if(R.power_mode == POWER_LOW)
-	{
-		//除了功能按键，所有灯全灭
-		L3_led_clear();
-		//禁用rfid
-		bsp_rfid_en(RFID_DISABLE);
-	}
-	else
-	{
-		//启用rfid
-		bsp_rfid_en(RFID_ENABLE);
-		//重新初始化RFID任务
-		L3_task_rfid_init();
-	}
 }
\ No newline at end of file
diff --git a/source/app/task_low_power.c b/source/app/task_low_power.c
index b0f149b..c122ba3 100644
--- a/source/app/task_low_power.c
+++ b/source/app/task_low_power.c
@@ -15,6 +15,7 @@
 #include "../bsp/bsp_config.h"
 #include "../bsp/bsp_rfid.h"
 #include "../msp/uart0.h"
+#include "../app/task_rfid.h"
 
 S_TASK_LOW_POWER _s_task_low_power;
 
@@ -29,6 +30,7 @@ void L3_task_low_power_init(void)
 void L3_task_low_power_handler(S_TASK_LOW_POWER *s)
 {
 	TTSS_Task_init()
+		s->power_mode = R.power_mode;
 		L2_task_go(D_task_LOW_POWER_SET);
 
 	TTSS_Task_step(D_task_LOW_POWER_SET)
@@ -39,7 +41,21 @@ void L3_task_low_power_handler(S_TASK_LOW_POWER *s)
 			//禁用RFID
 			bsp_rfid_en(RFID_DISABLE);
 		}
-		L2_task_go_Tdelay(D_task_LOW_POWER_SET,D_Tdelay_1s);
+		
+		if(s->power_mode != R.power_mode)
+		{
+			s->power_mode = R.power_mode;
+
+			//退出低功耗模式时，启用RFID
+			if(R.power_mode == POWER_NORMAL)
+			{
+				//启用rfid
+				bsp_rfid_en(RFID_ENABLE);
+				//重新初始化RFID任务
+				L3_task_rfid_init();
+			}
+		}
+		L2_task_go_Tdelay(D_task_LOW_POWER_SET,D_Tdelay_500ms);
 
 	TTSS_Task_end();
 }
diff --git a/source/app/task_low_power.h b/source/app/task_low_power.h
index a9e4b7d..1cfc556 100644
--- a/source/app/task_low_power.h
+++ b/source/app/task_low_power.h
@@ -19,6 +19,7 @@
 
 typedef struct _s_task_low_power
 {
+	U8 power_mode;
 	TS_task task;
 }S_TASK_LOW_POWER;
 
diff --git a/source/ctask/tick.h b/source/ctask/tick.h
index ac3bea0..3ea1fac 100644
--- a/source/ctask/tick.h
+++ b/source/ctask/tick.h
@@ -49,6 +49,7 @@ extern struct  _s_nos_tick_ s_nos_tick;
 #define D_Tdelay_200ms		((200-1) / JIFFIES+ 1)
 #define D_Tdelay_300ms		((300-1) / JIFFIES + 1)
 #define D_Tdelay_400ms		((400-1) / JIFFIES + 1)
+#define D_Tdelay_500ms		((500-1) / JIFFIES + 1)
 #define D_Tdelay_1s			(1 * HZ)
 #define D_Tdelay_2s			(2 * HZ)
 #define D_Tdelay_3s			(3 * HZ)