diff --git a/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/board.c b/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/board.c
index afc4802dc..4d7f3875d 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/board.c
+++ b/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/board.c
@@ -62,7 +62,6 @@ extern RxBuffer2;
 extern uint16_t UART_ReceiveData(USART_TypeDef* USARTx);
 void InitBoardHardware()
 {
-
     _SysTick_Config(SystemCoreClock / TICK_PER_SECOND);
     /* initialize memory system */
     InitBoardMemory(MEMORY_START_ADDRESS, (void*)MEMORY_END_ADDRESS);
@@ -70,17 +69,19 @@ void InitBoardHardware()
 #ifdef BSP_USING_UART4
     InstallConsole("uart4", "uart4_drv", "uart4_dev4");
 #endif
-    // #ifdef BSP_USING_UART2
-    //     InstallConsole("uart2", "uart2_drv", "uart2_dev2");
-    // #endif
 
 #ifdef BSP_USING_ETH
     InitHwEth();
 #endif
-
     KPrintf("consle init completed.\n");
     KPrintf("board initialization......\n");
 
     KPrintf("board init done.\n");
     KPrintf("start okernel...\n");
+    // while (1) {
+    //     uint32_t ans = (uint32_t)UART_ReceiveData(USART3);
+    //     KPrintf("%d\n", ans);
+    //     for (int i = 0; i < 10000; i++)
+    //         ;
+    // }
 }
diff --git a/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/third_party_driver/uart/connect_uart.c b/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/third_party_driver/uart/connect_uart.c
index 24424f447..e2db436f2 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/third_party_driver/uart/connect_uart.c
+++ b/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/third_party_driver/uart/connect_uart.c
@@ -167,7 +167,7 @@ static int SerialGetChar(struct SerialHardwareDevice* serial_dev)
 }
 
 static const struct SerialDataCfg data_cfg_init = {
-    .serial_baud_rate = 1500000,
+    .serial_baud_rate = BAUD_RATE_9600,
     .serial_data_bits = DATA_BITS_8,
     .serial_stop_bits = STOP_BITS_1,
     .serial_parity_mode = PARITY_NONE,
@@ -259,7 +259,7 @@ void USART1_IRQHandler(void)
 
 uint16_t UART_ReceiveData(USART_TypeDef* USARTx)
 {
-    return (uint16_t)(USARTx->DATAR & (uint16_t)0x01FF);
+    return (uint16_t)(USARTx->DATAR);
 }
 
 #ifdef BSP_USING_UART2
@@ -365,7 +365,7 @@ int InitHwUart(void)
     GPIO_Init(GPIOA, &gpio_init_struct);
 
     USART_InitTypeDef usart_init_struct;
-    usart_init_struct.USART_BaudRate = 1500000;
+    usart_init_struct.USART_BaudRate = 9600;
     usart_init_struct.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
     usart_init_struct.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
     usart_init_struct.USART_WordLength = USART_WordLength_8b;
@@ -429,7 +429,7 @@ int InitHwUart(void)
     GPIO_Init(GPIOB, &gpio_init_struct_2);
 
     USART_InitTypeDef usart_init_struct_2;
-    usart_init_struct_2.USART_BaudRate = 1500000;
+    usart_init_struct_2.USART_BaudRate = 9600;
     usart_init_struct_2.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
     usart_init_struct_2.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
     usart_init_struct_2.USART_WordLength = USART_WordLength_8b;
@@ -493,7 +493,7 @@ int InitHwUart(void)
     GPIO_Init(GPIOC, &gpio_init_struct_4);
 
     USART_InitTypeDef usart_init_struct_4;
-    usart_init_struct_4.USART_BaudRate = 1500000;
+    usart_init_struct_4.USART_BaudRate = 9600;
     usart_init_struct_4.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
     usart_init_struct_4.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
     usart_init_struct_4.USART_WordLength = USART_WordLength_8b;