diff --git a/rt-thread-version/rt-thread-standard/application-note/driver/spi/an0004-rtthread-driver-spi.md b/rt-thread-version/rt-thread-standard/application-note/driver/spi/an0004-rtthread-driver-spi.md
index c591781bc20bb850f45dfcf9f6ee1d707af31703..e031f542b65424cc352abd3c83f19a848603ad33 100644
--- a/rt-thread-version/rt-thread-standard/application-note/driver/spi/an0004-rtthread-driver-spi.md
+++ b/rt-thread-version/rt-thread-standard/application-note/driver/spi/an0004-rtthread-driver-spi.md
@@ -19,7 +19,7 @@
 ### 示例代码软硬件资源 ###
 
 1. [RT-Thread 源码](https://github.com/RT-Thread/rt-thread)
-2. [ENV工具](https://www.rt-thread.org/document/site/docs/tools/env/env-user-manual/)
+2. [ENV工具](https://www.rt-thread.org/download.html#download-rt-thread-env-tool)
 3. [SPI设备驱动示例代码](spi-oled.rar)
 4. <https://github.com/RT-Thread-packages/peripheral-sample>
 5. [正点原子STM32F4探索者开发板](http://www.openedv.com/thread-13912-1-1.html)