diff --git a/docs/en/base/BASE15.md b/docs/en/base/BASE15.md
index b7e2249c..e4261b8e 100644
--- a/docs/en/base/BASE15.md
+++ b/docs/en/base/BASE15.md
@@ -19,13 +19,12 @@
 
 ## 产品特性
 
-
 ## 套件清单
 
-
-
 ## 相关链接
 
 - **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
 
-- **[官方论坛](http://forum.m5stack.com/)**
\ No newline at end of file
+- **[官方论坛](http://forum.m5stack.com/)**
+
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Bases/BASE15.pdf)**
\ No newline at end of file
diff --git a/docs/en/base/BASE26.md b/docs/en/base/BASE26.md
index 60264b07..d244be52 100644
--- a/docs/en/base/BASE26.md
+++ b/docs/en/base/BASE26.md
@@ -28,4 +28,6 @@
 
 - **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
 
-- **[官方论坛](http://forum.m5stack.com/)**
\ No newline at end of file
+- **[官方论坛](http://forum.m5stack.com/)**
+
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Bases/BASE26.pdf)**
\ No newline at end of file
diff --git a/docs/en/hat/ENV.md b/docs/en/hat/ENV.md
index 877dff06..72c7b89b 100644
--- a/docs/en/hat/ENV.md
+++ b/docs/en/hat/ENV.md
@@ -42,6 +42,8 @@
 
 - **[官方论坛](http://forum.m5stack.com/)**
 
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Hat/StickHat_ENV.pdf)**
+
 - **[BMP280 的库](https://github.com/adafruit/Adafruit_BMP280_Library)**
 
 - **[BMM150 数据手册](https://pdf1.alldatasheet.com/datasheet-pdf/view/608913/ETC2/BMM150.html)**
diff --git a/docs/en/hat/PIR.md b/docs/en/hat/PIR.md
index 2d42f147..ea7c7607 100644
--- a/docs/en/hat/PIR.md
+++ b/docs/en/hat/PIR.md
@@ -35,3 +35,5 @@
 - **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
 
 - **[官方论坛](http://forum.m5stack.com/)**
+
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Hat/StickHat_PIR.pdf)**
\ No newline at end of file
diff --git a/docs/en/hat/SPK.md b/docs/en/hat/SPK.md
index a94f6dd8..97e97cee 100644
--- a/docs/en/hat/SPK.md
+++ b/docs/en/hat/SPK.md
@@ -34,4 +34,5 @@
 
 - **[PAM8303 数据手册](https://pdf1.alldatasheet.com/datasheet-pdf/view/790820/DIODES/PAM8303C.html)**
 
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Hat/StickHat_SPK.pdf)**
 
diff --git a/docs/zh_CN/base/BASE15.md b/docs/zh_CN/base/BASE15.md
index 013a94df..bc4bb09f 100644
--- a/docs/zh_CN/base/BASE15.md
+++ b/docs/zh_CN/base/BASE15.md
@@ -28,4 +28,6 @@
 
 - **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
 
-- **[官方论坛](http://forum.m5stack.com/)**
\ No newline at end of file
+- **[官方论坛](http://forum.m5stack.com/)**
+
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Bases/BASE15.pdf)**
diff --git a/docs/zh_CN/base/BASE26.md b/docs/zh_CN/base/BASE26.md
index 0877c961..334a1a80 100644
--- a/docs/zh_CN/base/BASE26.md
+++ b/docs/zh_CN/base/BASE26.md
@@ -28,4 +28,6 @@
 
 - **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
 
-- **[官方论坛](http://forum.m5stack.com/)**
\ No newline at end of file
+- **[官方论坛](http://forum.m5stack.com/)**
+
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Bases/BASE26.pdf)**
\ No newline at end of file
diff --git a/docs/zh_CN/hat/ENV.md b/docs/zh_CN/hat/ENV.md
index 877dff06..72c7b89b 100644
--- a/docs/zh_CN/hat/ENV.md
+++ b/docs/zh_CN/hat/ENV.md
@@ -42,6 +42,8 @@
 
 - **[官方论坛](http://forum.m5stack.com/)**
 
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Hat/StickHat_ENV.pdf)**
+
 - **[BMP280 的库](https://github.com/adafruit/Adafruit_BMP280_Library)**
 
 - **[BMM150 数据手册](https://pdf1.alldatasheet.com/datasheet-pdf/view/608913/ETC2/BMM150.html)**
diff --git a/docs/zh_CN/hat/PIR.md b/docs/zh_CN/hat/PIR.md
index 2d42f147..cf16ec38 100644
--- a/docs/zh_CN/hat/PIR.md
+++ b/docs/zh_CN/hat/PIR.md
@@ -35,3 +35,5 @@
 - **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
 
 - **[官方论坛](http://forum.m5stack.com/)**
+
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Hat/StickHat_PIR.pdf)**
diff --git a/docs/zh_CN/hat/SPK.md b/docs/zh_CN/hat/SPK.md
index a94f6dd8..19e454fa 100644
--- a/docs/zh_CN/hat/SPK.md
+++ b/docs/zh_CN/hat/SPK.md
@@ -34,4 +34,4 @@
 
 - **[PAM8303 数据手册](https://pdf1.alldatasheet.com/datasheet-pdf/view/790820/DIODES/PAM8303C.html)**
 
-
+- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Hat/StickHat_SPK.pdf)**