diff --git a/project/at32f421_board/at32f421_board.c b/project/at32f421_board/at32f421_board.c
index 82dc4f3..92a306a 100644
--- a/project/at32f421_board/at32f421_board.c
+++ b/project/at32f421_board/at32f421_board.c
@@ -206,8 +206,7 @@ void loop_timer_io_init(void)
     gpio_init(GPIOA, &gpio_init_struct);
     
         
-    LEDA_OFF;   // 红灭
-    LEDB_OFF;   // 绿灭
+    LEDA_OFF;   // 绿灭
     LEDC_OFF;   // 黄灭
     RLY1_OFF;
     RLY2_OFF;
diff --git a/project/at32f421_board/at32f421_board.h b/project/at32f421_board/at32f421_board.h
index 6f3ef9f..e98c309 100644
--- a/project/at32f421_board/at32f421_board.h
+++ b/project/at32f421_board/at32f421_board.h
@@ -92,25 +92,24 @@ typedef enum
 #define LED_YELLOW_CRM_CLK               CRM_GPIOA_PERIPH_CLOCK
 
 // LED 命名对齐 DLD154V4B 规格:
-//   LEDA = 红色呼吸灯 (PB1, TMR14 PWM)
-//   LEDB = 绿色有车指示灯 (PA9)
-//   LEDC = 黄色故障指示灯 (PA10)
-// 注意: DEBUG 模式下 PA9 复用为 UART TX，LEDB 宏为空
+//   LEDA = 绿色指示灯 (PA9): 自检慢闪 / 有车亮 / 无车灭
+//   LEDC = 黄色故障指示灯 (PA10): 快闪/编码闪烁
+//   红色呼吸灯 (PB1) 由 TMR14 PWM 直接驱动, 无需 GPIO 宏
+// 注意: DEBUG 模式下 PA9 复用为 UART TX，LEDA 宏为空
+//
+// 注: 代码中宏名 LEDA/LEDB/LEDC 为Keil BSP遗留,
+//     硬件实际: LEDA→绿灯PA9, LEDC→黄灯PA10, 红灯→PB1(PWM)
 
-// LEDA — 红色 (PB1)，GPIO 直接控制（初始化闪烁用，正常运行时 PWM）
-#define LEDA_OFF    gpio_bits_set(LED_RED_GPIO, LED_RED_PIN)
-#define LEDA_ON     gpio_bits_reset(LED_RED_GPIO, LED_RED_PIN)
-
-// LEDB — 绿色 (PA9)，有车亮
+// LEDA — 绿灯 (PA9)
 #ifdef DEBUG
-#define LEDB_OFF
-#define LEDB_ON
+#define LEDA_OFF
+#define LEDA_ON
 #else
-#define LEDB_OFF    gpio_bits_set(LED_GREEN_GPIO, LED_GREEN_PIN)
-#define LEDB_ON     gpio_bits_reset(LED_GREEN_GPIO, LED_GREEN_PIN)
+#define LEDA_OFF    gpio_bits_set(LED_GREEN_GPIO, LED_GREEN_PIN)
+#define LEDA_ON     gpio_bits_reset(LED_GREEN_GPIO, LED_GREEN_PIN)
 #endif
 
-// LEDC — 黄色 (PA10)，故障指示
+// LEDC — 黄灯 (PA10)，故障指示
 #define LEDC_OFF    gpio_bits_set(LED_YELLOW_GPIO, LED_YELLOW_PIN)
 #define LEDC_ON     gpio_bits_reset(LED_YELLOW_GPIO, LED_YELLOW_PIN)
 
diff --git a/utilities/at32f421_freertos_demo/src/TaskLoop.c b/utilities/at32f421_freertos_demo/src/TaskLoop.c
index 1290fa5..da78f91 100644
--- a/utilities/at32f421_freertos_demo/src/TaskLoop.c
+++ b/utilities/at32f421_freertos_demo/src/TaskLoop.c
@@ -213,9 +213,9 @@ void poll_green_led(void)
     /*--- 正常工作：车辆存在指示 ---*/
     _slow_tick = 0;
     if (loop1_VD_FLAG)
-        LEDB_ON;
+        LEDA_ON;
     else
-        LEDB_OFF;
+        LEDA_OFF;
 }
 
 /*===========================================================================