diff --git a/V1.5/STM32F103_App1/HardWare/FEED_SCALE/feed_scale.c b/V1.5/STM32F103_App1/HardWare/FEED_SCALE/feed_scale.c
index 1d5dc20..3dc6f4c 100644
--- a/V1.5/STM32F103_App1/HardWare/FEED_SCALE/feed_scale.c
+++ b/V1.5/STM32F103_App1/HardWare/FEED_SCALE/feed_scale.c
@@ -124,6 +124,7 @@ static int feed_scale_parse_weight(const uint8_t *buf, uint16_t len, uint16_t *w
 /* 通过 USART2 发送 485 查询命令 */
 static void feed_scale_send_query(void)
 {
+    USART2_ForceRxReset();   /* 清缓冲+重挂接收，防止前次残留状态吞掉本次应答 */
     HAL_UART_Transmit(&huart2, (uint8_t *)RS485_WEIGHT_CMD, sizeof(RS485_WEIGHT_CMD), 100);
 }
 
diff --git a/V1.5/STM32F103_App1/HardWare/UART/uart.c b/V1.5/STM32F103_App1/HardWare/UART/uart.c
index 714ca31..2bcf779 100644
--- a/V1.5/STM32F103_App1/HardWare/UART/uart.c
+++ b/V1.5/STM32F103_App1/HardWare/UART/uart.c
@@ -262,6 +262,25 @@ void USART2_StartRx(void)
     HAL_UART_Receive_IT(&huart2, &uart2_rx_byte, 1);
 }
 
+/* 强制复位 USART2 接收：清错误标志/缓冲并重新挂中断接收。
+ * 485 查询前调用——ORE 等错误可能让 HAL 接收状态卡死（自愈重挂也会因
+ * RxState 非 READY 而静默失败），不复位的话之后所有应答都收不到 */
+void USART2_ForceRxReset(void)
+{
+    __HAL_UART_CLEAR_OREFLAG(&huart2);
+    __HAL_UART_CLEAR_PEFLAG(&huart2);
+    __HAL_UART_CLEAR_FEFLAG(&huart2);
+    __HAL_UART_CLEAR_NEFLAG(&huart2);
+    __HAL_UART_CLEAR_IDLEFLAG(&huart2);
+    huart2.ErrorCode = HAL_UART_ERROR_NONE;
+    if (huart2.RxState != HAL_UART_STATE_READY) {
+        HAL_UART_AbortReceive(&huart2);
+    }
+    uart2_rx_ready = 0;
+    uart2_cmd_index = 0;
+    HAL_UART_Receive_IT(&huart2, &uart2_rx_byte, 1);
+}
+
 /* 从 USART2 接收缓冲区取出一帧（20ms 无新字节结束），返回帧长度，0 表示暂无完整帧 */
 uint16_t USART2_GetFrame(uint8_t *out, uint16_t out_size)
 {
diff --git a/V1.5/STM32F103_App1/HardWare/UART/uart.h b/V1.5/STM32F103_App1/HardWare/UART/uart.h
index 1ac9753..faf2bcc 100644
--- a/V1.5/STM32F103_App1/HardWare/UART/uart.h
+++ b/V1.5/STM32F103_App1/HardWare/UART/uart.h
@@ -35,7 +35,8 @@ void USART1_StartRx(void);  /* 
 void USART2_StartRx(void);  /* 启动 USART2 中断接收 */
 void UART5_StartRx(void);   /* 启动 UART5 中断接收（HLW8032） */
 void USART2_Tick(void);      /* 触发 USART2 帧超时自动提交 */
-uint16_t USART2_GetFrame(uint8_t *out, uint16_t out_size); /* 从 USART2 取一帧原始字节 */
+uint16_t USART2_GetFrame(uint8_t *out, uint16_t out_size);
+void USART2_ForceRxReset(void); /* 强制复位 USART2 接收（485 查询前调用） */ /* 从 USART2 取一帧原始字节 */
 int  USART1_CheckCommand(const char *cmd);  /* 检查是否收到指定命令（不区分大小写） */
 const char *USART1_GetCommand(void);      /* 获取当前接收到的命令字符串 */
 
diff --git a/V1.5/鐗堟湰璇存槑.md b/V1.5/鐗堟湰璇存槑.md
index 546326f..b22a06e 100644
--- a/V1.5/鐗堟湰璇存槑.md
+++ b/V1.5/鐗堟湰璇存槑.md
@@ -180,3 +180,5 @@
   锛堟棤搴旂瓟/甯х煭/CRC閿�/绉ゅ紓甯稿抚/绔欏彿涓嶇锛夛紱鏃犵Г妯″紡浠嶆樉绀哄紑鍏崇姸鎬�
 - 鏂數棰勮鏃� OLED 鍏虫樉绀猴紙0xAE 榛戝睆锛岀渷鐢�+閬垮厤娈嬪奖锛�
 - 鍘绘帀 OLED 闃茬儳灞忓乏鍙冲亸绉伙紙鏂數宸插叧灞忥紝鍋忕Щ鎰忎箟涓嶅ぇ锛�
+- 淇 485 棣栨搴旂瓟涓㈠け锛歎SART2 鎺ユ敹鍙兘鍥� ORE 娈嬬暀鐘舵�佸崱姝伙紙鑷剤閲嶆寕鍥� RxState 闈� READY 闈欓粯澶辫触锛夛紝
+  鐜版瘡娆℃煡璇㈠墠 USART2_ForceRxReset() 寮哄埗澶嶄綅鎺ユ敹锛堟竻閿欒/缂撳啿+閲嶆寕涓柇锛夛紝棣栧寘涓嶅啀涓�