diff --git a/Project/HC32F460/source/Module/dc_motor/dc_motor.c b/Project/HC32F460/source/Module/dc_motor/dc_motor.c
index 442cf72..cd67c6a 100644
--- a/Project/HC32F460/source/Module/dc_motor/dc_motor.c
+++ b/Project/HC32F460/source/Module/dc_motor/dc_motor.c
@@ -34,7 +34,7 @@ void DCMOTORDBGOnOff(uint8_t OnOff)
 
 /* Timer4 CNT */
 #define TIMER4_UNIT                     (M4_TMR41)
-#define TIMER4_CNT_CYCLE_VAL            (10000u)        /* Timer4 counter cycle value */
+#define TIMER4_CNT_CYCLE_VAL            (500u)        /* Timer4 counter cycle value */
 
 /* Timer4 OCO */
 #define TIMER4_OCO_HIGH_CH              (Timer4OcoOuh)  /* only Timer4OcoOuh  Timer4OcoOvh  Timer4OcoOwh */
diff --git a/Project/HC32F460/source/Module/dc_motor/dc_motor.h b/Project/HC32F460/source/Module/dc_motor/dc_motor.h
index 9543ddb..d7e319c 100644
--- a/Project/HC32F460/source/Module/dc_motor/dc_motor.h
+++ b/Project/HC32F460/source/Module/dc_motor/dc_motor.h
@@ -11,10 +11,10 @@
 #define TIMER       TIMER4
 // 电机控制参数
 #define PWM_PERIOD           TIM_PERIOD		// PWM周期值 (ARR)
-#define MAX_SPEED            9900     		// 最大速度(PWM占空比)
-#define ACCEL_STEP           100				// 加速步进值
-#define DECEL_STEP           100				// 减速步进值
-#define ACCEL_INTERVAL       2				// 加减速间隔(ms)
+#define MAX_SPEED            480     		// 最大速度(PWM占空比)
+#define ACCEL_STEP           10				// 加速步进值
+#define DECEL_STEP           10				// 减速步进值
+#define ACCEL_INTERVAL       10				// 加减速间隔(ms)