diff --git a/bsp/hc32/ev_hc32f460_lqfp100_v2/board/board_config.c b/bsp/hc32/ev_hc32f460_lqfp100_v2/board/board_config.c
index 50cb97e85f..4870eedd43 100644
--- a/bsp/hc32/ev_hc32f460_lqfp100_v2/board/board_config.c
+++ b/bsp/hc32/ev_hc32f460_lqfp100_v2/board/board_config.c
@@ -23,6 +23,27 @@ rt_err_t rt_hw_board_uart_init(CM_USART_TypeDef *USARTx)
 
     switch ((rt_uint32_t)USARTx)
     {
+#if defined(BSP_USING_UART1)
+    case (rt_uint32_t)CM_USART1:
+        /* Configure USART RX/TX pin. */
+        GPIO_SetFunc(USART1_RX_PORT, USART1_RX_PIN, GPIO_FUNC_33);
+        GPIO_SetFunc(USART1_TX_PORT, USART1_TX_PIN, GPIO_FUNC_32);
+        break;
+#endif
+#if defined(BSP_USING_UART2)
+    case (rt_uint32_t)CM_USART2:
+        /* Configure USART RX/TX pin. */
+        GPIO_SetFunc(USART2_RX_PORT, USART2_RX_PIN, GPIO_FUNC_37);
+        GPIO_SetFunc(USART2_TX_PORT, USART2_TX_PIN, GPIO_FUNC_36);
+        break;
+#endif
+#if defined(BSP_USING_UART3)
+    case (rt_uint32_t)CM_USART3:
+        /* Configure USART RX/TX pin. */
+        GPIO_SetFunc(USART3_RX_PORT, USART3_RX_PIN, GPIO_FUNC_33);
+        GPIO_SetFunc(USART3_TX_PORT, USART3_TX_PIN, GPIO_FUNC_32);
+        break;
+#endif
 #if defined(BSP_USING_UART4)
     case (rt_uint32_t)CM_USART4:
         /* Configure USART RX/TX pin. */