diff --git a/docs/zh_CN/accessory/screw.md b/docs/zh_CN/accessory/screw.md
index 2f016fa9..3df0b524 100644
--- a/docs/zh_CN/accessory/screw.md
+++ b/docs/zh_CN/accessory/screw.md
@@ -11,14 +11,14 @@
 ### 产品特性
 
 -  规格: 
-      - 2x M2-32
-      - 2x M2-25
-      - 2x M2-18
-      - 2x M2-12
-      - 2x M2-22
-      - 2x M2-28
-      - 2x M2-35
-      - 2x M2-16
+      - 2x M3-32
+      - 2x M3-25
+      - 2x M3-18
+      - 2x M3-12
+      - 2x M3-22
+      - 2x M3-28
+      - 2x M3-35
+      - 2x M3-16
 
 ## 规格参数