diff --git a/zh/peripherals/machine.I2C.md b/zh/peripherals/machine.I2C.md
index 6007b2c44f46f57741db500240222bd034c26332..42fa83b855aee2c7afd6dd57a29a0c2b03af41ad 100644
--- a/zh/peripherals/machine.I2C.md
+++ b/zh/peripherals/machine.I2C.md
@@ -92,11 +92,9 @@
 </div>
 
 <div class="content-QuecPython">
-
 <div class="EC600U|EC200U|BC25PA|EG915U|EC600G|BC32|BC92|EC800Z|EC200A|UC200A|EC800N|BG95|EC600M|EC800M|EG810M|EG912N|EC800G|EG912U|EC600K|EC800K|EG800K|EG915N|EC600E|EC800E|FCM360W">
 <p><strong>示例：</strong></p>
-<pre class="language-python"><code class="language-python">
->>> from machine import I2C
+<pre class="language-python"><code class="language-python">>>> from machine import I2C
 >>> # 创建I2C对象
 >>> i2c_obj = I2C(I2C.I2C0, I2C.STANDARD_MODE)  # 返回I2C对象
 </code></pre>
@@ -104,12 +102,12 @@
 
 <div class="FCM362K">
 <p><strong>示例：</strong></p>
-<pre class="language-python"><code class="language-python">
->>> from machine import I2C
+<pre class="language-python"><code class="language-python">>>> from machine import I2C
 >>> # 创建I2C对象
 >>> i2c_obj = I2C(I2C.I2C0, I2C.STANDARD_MODE,0)  # 返回I2C对象
 </code></pre>
 </div>
+
 </div>
 
 
diff --git a/zh/peripherals/machine.UART.md b/zh/peripherals/machine.UART.md
index 9f39602ac74ec8dbf6e795a7e6a1542d9f945f79..e45de618ee4ff72c4d9a86b55ae05db328a00e5d 100644
--- a/zh/peripherals/machine.UART.md
+++ b/zh/peripherals/machine.UART.md
@@ -1282,15 +1282,17 @@ uart.close()
 
 成功返回整型值`0`，失败返回整型值`-1`。
 
+### `uart.control_485`
+
 <div class="content-QuecPython">
 <div class="EC600U|EC200U|EC200A|UC200A|EC800N|EC600M|EC800M|EG810M|EG912N|EC600E|EC800E|EC600G|EC800G|EC600K|EC800K|EG800K|EG800P|FCM362K|BC32|BC92|EG915N|EC800Z|EG912U">
-<h3 id="%3Ccode%3Euart.control_485%3C/code%3E"><code>uart.control_485</code></h3>
+
 <pre class="language-python"><code class="language-python">uart.control_485(UART.GPIOn, direction)
 </code></pre>
 <p>该方法用于控制485通信方向，串口发送数据之前和之后进行拉高拉低指定GPIO，用来指示485通信的方向。</p>
 <p><strong>参数描述：</strong></p>
 <ul>
-<li><p><code>GPIOn</code> - 需要控制的GPIO引脚号，参照[Pin模块](machine.Pin.md)的引脚定义，int类型。<br/></p>
+<li><p><code>GPIOn</code> - 需要控制的GPIO引脚号，参照<a href="machine.Pin.md">Pin模块</a>的引脚定义，int类型。<br/></p>
 </li>
 <li><p><code>direction</code> - 引脚电平变化，int类型，说明如下：<br/><code>1</code>表示引脚电平变化为：串口发送数据之前由低拉高、发送数据之后再由高拉低<br/><code>0</code>表示引脚电平变化为：串口发送数据之前由高拉低、发送数据之后再由低拉高<br/></p>
 </li>
@@ -1298,12 +1300,13 @@ uart.close()
 <p><strong>返回值描述：</strong></p>
 <p>成功返回整型值<code>0</code>，失败返回整型值<code>-1</code>。</p>
 <p><strong>示例：</strong></p>
-<pre class="language-python"><code class="language-python">from machine import UART<br/>uart1 = UART(UART.UART1, 115200, 8, 0, 1, 0)<br/>art1.control_485(UART.GPIO24, 1)
+<pre class="language-python"><code class="language-python">from machine import UART
+uart1 = UART(UART.UART1, 115200, 8, 0, 1, 0)
+art1.control_485(UART.GPIO24, 1)
 </code></pre>
 </div>
 
 <div class="BC25PA|BG95|FCM360W">
-<h3 id="%3Ccode%3Euart.control_485%3C/code%3E"><code>uart.control_485</code></h3>
 <p><strong>该型号不支持此API</strong></p>
 </div>