diff --git a/docs/Application_guide/en/hardware/peripheral-interfaces/UART.md b/docs/Application_guide/en/hardware/peripheral-interfaces/UART.md
index 8d1ef74ec32a6eac4089c0bc24d959a23b6dafae..76abf32c17f90c69c1c4b0a52bea6aede3c855a1 100644
--- a/docs/Application_guide/en/hardware/peripheral-interfaces/UART.md
+++ b/docs/Application_guide/en/hardware/peripheral-interfaces/UART.md
@@ -366,10 +366,10 @@ For API introduction, please refer to [machine.UART.control_485](https://python.
 
 | Cases                                 | Description                                                  |
 | ------------------------------------- | ------------------------------------------------------------ |
-| [Basic Tx/Rx](#Basic Tx/Rx)           | Configure UART setting and read and write via UART1. It will read data in a method of callback |
-| [External GNSS](#External GNSS)       | By decrypting the GNGGA, GNRMC and GPGSV in raw GNSS data packet read from external GNSS by UART to get positioning info. |
+| [Basic Tx/Rx](https://python.quectel.com/doc/Application_guide/en/hardware/peripheral-interfaces/UART.html#Basic-Tx/Rx)           | Configure UART setting and read and write via UART1. It will read data in a method of callback |
+| [External GNSS](https://python.quectel.com/doc/Application_guide/en/hardware/peripheral-interfaces/UART.html#External-GNSS)       | By decrypting the GNGGA, GNRMC and GPGSV in raw GNSS data packet read from external GNSS by UART to get positioning info. |
 | [RS485application](https://python.quectel.com/doc/Application_guide/en/hardware/peripheral-interfaces/UART.html#RS-485-application) | Set UART driver programm in half duplex to communicate via RS485 interface |
-| [Power meter chip](#Power meter chip) | Take power meter chip as an example: read and write corresponding parameter via UART to get power data or execute other controlling commands. |
+| [Power meter chip](https://python.quectel.com/doc/Application_guide/en/hardware/peripheral-interfaces/UART.html#Power-meter-chip) | Take power meter chip as an example: read and write corresponding parameter via UART to get power data or execute other controlling commands. |
 
 ### Basic Tx/Rx