diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/dac/dac.md b/rt-thread-version/rt-thread-standard/programming-manual/device/dac/dac.md
index 74b37443b71e7373e50f74d824054d7887224594..d6644db0ff90885562ab28f4e70f983da7ec7059 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/dac/dac.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/dac/dac.md
@@ -32,12 +32,12 @@ DAC 主要由数字寄存器、模拟电子开关、位权网络、求和运算
 
 应用程序通过 RT-Thread 提供的 DAC 设备管理接口来访问 DAC 硬件，相关接口如下所示：
 
-| **函数**         | **描述**                              |
-| ---------------- | ------------------------------------- |
-| rt_device_find() | 根据 DAC 设备名称查找设备获取设备句柄 |
-| rt_dac_enable()  | 使能 DAC 设备                         |
-| rt_dac_write()   | 设置 DAC 设备输出值                   |
-| rt_dac_disable() | 关闭 DAC 设备                         |
+| **函数**          | **描述**                              |
+| ----------------- | ------------------------------------- |
+| rt_device_find()  | 根据 DAC 设备名称查找设备获取设备句柄 |
+| rt_dac_enable()   | 使能 DAC 设备                         |
+| rt_dac_write()    | 设置 DAC 设备输出值                   |
+| rt_dac_disabled() | 关闭 DAC 设备                         |
 
 ### 查找 DAC 设备
 
@@ -133,7 +133,7 @@ rt_kprintf("the voltage is :%d.%02d \n", vol / 100, vol % 100);
 关闭 DAC 通道可通过如下函数完成：
 
 ```c
-rt_err_t rt_dac_disable(rt_dac_device_t dev, rt_uint32_t channel);
+rt_err_t rt_dac_disabled(rt_dac_device_t dev, rt_uint32_t channel);
 ```
 
 | **参数**   | **描述**               |
@@ -162,7 +162,7 @@ rt_dac_write(dac_dev, DAC_DEV_CHANNEL， &value);
 vol = value * REFER_VOLTAGE / CONVERT_BITS;
 rt_kprintf("the voltage is :%d.%02d \n", vol / 100, vol % 100);
 /* 关闭通道 */
-rt_dac_disable(dac_dev, DAC_DEV_CHANNEL);
+rt_dac_disabled(dac_dev, DAC_DEV_CHANNEL);
 ```
 
 ### FinSH 命令
@@ -243,7 +243,7 @@ static int dac_vol_sample(int argc, char *argv[])
 
     /* 设置输出值 */
     value = atoi(argv[1]);
-    rt_dac_write(dac_dev, DAC_DEV_NAME, DAC_DEV_CHANNEL, &value);
+    rt_dac_write(dac_dev, DAC_DEV_NAME, DAC_DEV_CHANNEL, value);
     rt_kprintf("the value is :%d \n", value);
 
     /* 转换为对应电压值 */
@@ -251,7 +251,7 @@ static int dac_vol_sample(int argc, char *argv[])
     rt_kprintf("the voltage is :%d.%02d \n", vol / 100, vol % 100);
 
     /* 关闭通道 */
-    ret = rt_dac_disable(dac_dev, DAC_DEV_CHANNEL);
+    ret = rt_dac_disabled(dac_dev, DAC_DEV_CHANNEL);
 
     return ret;
 }