diff --git a/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/common/pin_mux.c b/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/common/pin_mux.c
index 3a5e320fd..de911ee2c 100755
--- a/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/common/pin_mux.c
+++ b/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/common/pin_mux.c
@@ -1095,6 +1095,37 @@ void BOARD_InitUartPins(void)
         0x10B0u);
 #endif
 
+#ifdef BSP_USING_LPUART3
+    IOMUXC_SetPinMux(
+        IOMUXC_GPIO_AD_B1_06_LPUART3_TX,
+        0U);
+    IOMUXC_SetPinMux(
+        IOMUXC_GPIO_AD_B1_07_LPUART3_RX,
+        0U);
+    IOMUXC_SetPinConfig(
+        IOMUXC_GPIO_AD_B1_06_LPUART3_TX,
+        0x10B0u);
+    IOMUXC_SetPinConfig(
+        IOMUXC_GPIO_AD_B1_07_LPUART3_RX,
+        0x10B0u);
+#endif
+
+
+#ifdef BSP_USING_LPUART4
+    IOMUXC_SetPinMux(
+        IOMUXC_GPIO_SD_B1_00_LPUART4_TX,
+        0U);
+    IOMUXC_SetPinMux(
+        IOMUXC_GPIO_SD_B1_01_LPUART4_RX,
+        0U);
+    IOMUXC_SetPinConfig(
+        IOMUXC_GPIO_SD_B1_00_LPUART4_TX,
+        0x10B0u);
+    IOMUXC_SetPinConfig(
+        IOMUXC_GPIO_SD_B1_01_LPUART4_RX,
+        0x10B0u);
+#endif
+
 #ifdef BSP_USING_LPUART8
     IOMUXC_SetPinMux(
         IOMUXC_GPIO_AD_B1_10_LPUART8_TX,
diff --git a/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/Kconfig b/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/Kconfig
index 148c78116..50dcb94cf 100644
--- a/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/Kconfig
+++ b/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/Kconfig
@@ -28,6 +28,36 @@ config BSP_USING_LPUART2
                 default "uart2_dev2"   
     endif
 
+config BSP_USING_LPUART3
+    bool "Enable LPUART3"
+    default y
+    if BSP_USING_LPUART3
+        config SERIAL_BUS_NAME_3
+            string "serial bus 3 name"
+            default "uart3"
+        config SERIAL_DRV_NAME_3
+            string "serial bus 3 driver name"
+            default "uart3_drv"
+        config SERIAL_3_DEVICE_NAME_0
+                string "serial bus 3 device name"
+                default "uart3_dev3"   
+    endif
+
+config BSP_USING_LPUART4
+    bool "Enable LPUART4"
+    default n
+    if BSP_USING_LPUART4
+        config SERIAL_BUS_NAME_4
+            string "serial bus 4 name"
+            default "uart4"
+        config SERIAL_DRV_NAME_4
+            string "serial bus 4 driver name"
+            default "uart4_drv"
+        config SERIAL_4_DEVICE_NAME_0
+                string "serial bus 4 device name"
+                default "uart4_dev4"   
+    endif
+
 config BSP_USING_LPUART8
     bool "Enable LPUART8"
     default n
diff --git a/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/connect_uart.c b/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/connect_uart.c
index 01edbe363..ea503f351 100644
--- a/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/connect_uart.c
+++ b/Ubiquitous/XiZi/board/xidatong-arm32/third_party_driver/uart/connect_uart.c
@@ -66,6 +66,40 @@ void LPUART2_IRQHandler(int irqn, void *arg)
 DECLARE_HW_IRQ(UART2_IRQn, LPUART2_IRQHandler, NONE);
 #endif
 
+#ifdef BSP_USING_LPUART3
+struct SerialBus serial_bus_3;
+struct SerialDriver serial_driver_3;
+struct SerialHardwareDevice serial_device_3;
+
+void LPUART3_IRQHandler(int irqn, void* arg)
+{
+
+    DisableIRQ(LPUART3_IRQn);
+
+    UartIsr(&serial_bus_3, &serial_driver_3, &serial_device_3);
+    EnableIRQ(LPUART3_IRQn);
+
+}
+DECLARE_HW_IRQ(LPUART3_IRQn, LPUART3_IRQHandler, NONE);
+#endif
+
+#ifdef BSP_USING_LPUART4
+struct SerialBus serial_bus_4;
+struct SerialDriver serial_driver_4;
+struct SerialHardwareDevice serial_device_4;
+
+void LPUART4_IRQHandler(int irqn, void* arg)
+{
+
+    DisableIRQ(LPUART4_IRQn);
+
+    UartIsr(&serial_bus_4, &serial_driver_4, &serial_device_4);
+    EnableIRQ(LPUART4_IRQn);
+
+}
+DECLARE_HW_IRQ(LPUART4_IRQn, LPUART4_IRQHandler, NONE);
+#endif
+
 #ifdef BSP_USING_LPUART8
 struct SerialBus serial_bus_8;
 struct SerialDriver serial_driver_8;
@@ -443,6 +477,72 @@ int Imxrt1052HwUartInit(void)
     }  
 #endif
 
+#ifdef BSP_USING_LPUART3
+    static struct SerialCfgParam serial_cfg_3;
+    memset(&serial_cfg_3, 0, sizeof(struct SerialCfgParam));
+
+    static struct SerialDevParam serial_dev_param_3;
+    memset(&serial_dev_param_3, 0, sizeof(struct SerialDevParam));
+
+    serial_driver_3.drv_done = &drv_done;
+    serial_driver_3.configure = &SerialDrvConfigure;
+    serial_device_3.hwdev_done = &hwdev_done;
+
+    serial_cfg_3.data_cfg = data_cfg_init;
+
+    serial_cfg_3.hw_cfg.private_data = (void*)LPUART3;
+    serial_cfg_3.hw_cfg.serial_irq_interrupt = LPUART3_IRQn;
+    serial_driver_3.private_data = (void*)&serial_cfg_3;
+
+    serial_dev_param_3.serial_work_mode = SIGN_OPER_INT_RX;
+    serial_device_3.haldev.private_data = (void*)&serial_dev_param_3;
+
+    ret = BoardSerialBusInit(&serial_bus_3, &serial_driver_3, SERIAL_BUS_NAME_3, SERIAL_DRV_NAME_3);
+    if (EOK != ret) {
+        KPrintf("Imxrt1052HwUartInit uart error ret %u\n", ret);
+        return ERROR;
+    }
+
+    ret = BoardSerialDevBend(&serial_device_3, (void*)&serial_cfg_3, SERIAL_BUS_NAME_3, SERIAL_3_DEVICE_NAME_0);
+    if (EOK != ret) {
+        KPrintf("Imxrt1052HwUartInit uart error ret %u\n", ret);
+        return ERROR;
+    }
+#endif
+
+#ifdef BSP_USING_LPUART4
+    static struct SerialCfgParam serial_cfg_4;
+    memset(&serial_cfg_4, 0, sizeof(struct SerialCfgParam));
+
+    static struct SerialDevParam serial_dev_param_4;
+    memset(&serial_dev_param_4, 0, sizeof(struct SerialDevParam));
+
+    serial_driver_4.drv_done = &drv_done;
+    serial_driver_4.configure = &SerialDrvConfigure;
+    serial_device_4.hwdev_done = &hwdev_done;
+
+    serial_cfg_4.data_cfg = data_cfg_init;
+
+    serial_cfg_4.hw_cfg.private_data = (void*)LPUART4;
+    serial_cfg_4.hw_cfg.serial_irq_interrupt = LPUART4_IRQn;
+    serial_driver_4.private_data = (void*)&serial_cfg_4;
+
+    serial_dev_param_4.serial_work_mode = SIGN_OPER_INT_RX;
+    serial_device_4.haldev.private_data = (void*)&serial_dev_param_4;
+
+    ret = BoardSerialBusInit(&serial_bus_4, &serial_driver_4, SERIAL_BUS_NAME_4, SERIAL_DRV_NAME_4);
+    if (EOK != ret) {
+        KPrintf("Imxrt1052HwUartInit uart error ret %u\n", ret);
+        return ERROR;
+    }
+
+    ret = BoardSerialDevBend(&serial_device_4, (void*)&serial_cfg_4, SERIAL_BUS_NAME_4, SERIAL_4_DEVICE_NAME_0);
+    if (EOK != ret) {
+        KPrintf("Imxrt1052HwUartInit uart error ret %u\n", ret);
+        return ERROR;
+    }
+#endif
+
 #ifdef BSP_USING_LPUART8
     static struct SerialCfgParam serial_cfg_8;
     memset(&serial_cfg_8, 0, sizeof(struct SerialCfgParam));