diff --git a/docs/soft/maixpy3/zh/usage/hardware/I2C.ipynb b/docs/soft/maixpy3/zh/usage/hardware/I2C.ipynb
index a284477f..457b7846 100644
--- a/docs/soft/maixpy3/zh/usage/hardware/I2C.ipynb
+++ b/docs/soft/maixpy3/zh/usage/hardware/I2C.ipynb
@@ -139,7 +139,7 @@
     "\n",
     "## 了解更多\n",
     "\n",
-    "MaixPy3 中的 i2c 是基于 libi2c 进行封装的，想要了解更多可以查阅 [libi2c](https://github.com/sipeed/MaixPy3/tree/master/ext_modules/libi2c) 的实现。\n",
+    "MaixPy3 中的 i2c 是基于 libi2c 进行封装的，想要了解更多可以查看[m2dock i2c 的开发记录](https://wiki.sipeed.com/soft/maixpy3/zh/usage/hardware/back/I2C_1.html)，也可以查阅 [libi2c](https://github.com/sipeed/MaixPy3/tree/master/ext_modules/libi2c) 的实现。\n",
     "\n",
     "\n"
    ]