diff --git a/zh-cn/device-dev/driver/driver-platform-mipidsi-develop.md b/zh-cn/device-dev/driver/driver-platform-mipidsi-develop.md
index 49d492ba8b5ff283573d7446abe0eaaea88e9f20..4998851b8ed39de5f550e40b8613b5ba21475b30 100755
--- a/zh-cn/device-dev/driver/driver-platform-mipidsi-develop.md
+++ b/zh-cn/device-dev/driver/driver-platform-mipidsi-develop.md
@@ -69,9 +69,9 @@ struct MipiDsiCntlrMethod { // 核心层结构体的成员函数
 </tr>
 <tr id="row793312013010"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.2.6.1.1 "><p id="p13933120708"><a name="p13933120708"></a><a name="p13933120708"></a>getCmd</p>
 </td>
-<td class="cellrowborder" valign="top" width="20%" headers="mcps1.2.6.1.2 "><p id="p199331906010"><a name="p199331906010"></a><a name="p199331906010"></a>cntlr: 结构体指针，MipiDsi控制器 ;</p>
+<td class="cellrowborder" valign="top" width="20%" headers="mcps1.2.6.1.2 "><p id="p199331906010"><a name="p199331906010"></a><a name="p199331906010"></a>cntlr：结构体指针，MipiDsi控制器；</br>cmd：传入的命令描述结构体指针；</br>readLen：读取的数据大小；</p>
 </td>
-<td class="cellrowborder" valign="top" width="20%" headers="mcps1.2.6.1.3 "><p id="p139331001602"><a name="p139331001602"></a><a name="p139331001602"></a>cmd: 结构体指针,用于传出指令值;</p>
+<td class="cellrowborder" valign="top" width="20%" headers="mcps1.2.6.1.3 "><p id="p139331001602"><a name="p139331001602"></a><a name="p139331001602"></a>out：结构体指针，用于存储读取的数据。</p>
 </td>
 <td class="cellrowborder" valign="top" width="20%" headers="mcps1.2.6.1.4 "><p id="p993390900"><a name="p993390900"></a><a name="p993390900"></a>HDF_STATUS相关状态</p>
 </td>
diff --git a/zh-cn/device-dev/driver/driver-platform-uart-develop.md b/zh-cn/device-dev/driver/driver-platform-uart-develop.md
index b0c410be520e08c8f7551afbb25d54de9c1b229a..82f50bc23b2af3e0fa920b2aeb9865b25c90c398 100755
--- a/zh-cn/device-dev/driver/driver-platform-uart-develop.md
+++ b/zh-cn/device-dev/driver/driver-platform-uart-develop.md
@@ -535,10 +535,10 @@ UART模块适配HDF框架的三个环节是配置属性文件，实例化驱动
                 if (port->physBase != 0) {
                     OsalIoUnmap((void *)port->physBase);//地址反映射
                 }
-                (void)OsalMemFree(port);
+                OsalMemFree(port);
                 udd->private = NULL;
             }
-            (void)OsalMemFree(udd);//释放UartDriverData
+            OsalMemFree(udd);//释放UartDriverData
             host->priv = NULL;
         }
         ```
diff --git a/zh-cn/device-dev/driver/driver-platform-watchdog-des.md b/zh-cn/device-dev/driver/driver-platform-watchdog-des.md
index fcc46c34fcc16906c9f15e55016aea94513f3f58..5028b9c5b7d7df285bb8c98e1790eab8dd28d8e2 100644
--- a/zh-cn/device-dev/driver/driver-platform-watchdog-des.md
+++ b/zh-cn/device-dev/driver/driver-platform-watchdog-des.md
@@ -541,12 +541,12 @@ static int32_t TestCaseWatchdog(void)
 
     /* 接下来持续不喂狗，使得看门狗计时器超时 */
     for (i = 0; i < WATCHDOG_TEST_FEED_TIME; i++) {
-        HDF_LOGE("%s: watiting dog buck %d times... \n", __func__, i);
+        HDF_LOGE("%s: watiting dog back %d times... \n", __func__, i);
         OsalSleep(1);
     }
 
     /* 当不喂狗时间到达之前设定的超时时间的时候，系统会发生复位，理论上观察不到此日志的打印 */
-    HDF_LOGE("%s: dog has't buck!!! \n", __func__, i);
+    HDF_LOGE("%s: dog hasn't back!!! \n", __func__, i);
     WatchdogClose(handle);
     return -1;
 }