diff --git a/components/input/demo/autosize-textarea.md b/components/input/demo/autosize-textarea.md
index 307720c81a..fb04ab8066 100644
--- a/components/input/demo/autosize-textarea.md
+++ b/components/input/demo/autosize-textarea.md
@@ -1,7 +1,7 @@
 ---
 order: 6
 title:
-    zn-CN: 适应文本高度的文本域
+    zh-CN: 适应文本高度的文本域
     en-US: Autosizing the height to fit the content
 ---
 
diff --git a/components/input/demo/basic.md b/components/input/demo/basic.md
index 86bc3b1381..aa8f8a916c 100644
--- a/components/input/demo/basic.md
+++ b/components/input/demo/basic.md
@@ -1,7 +1,7 @@
 ---
 order: 0
 title:
-    zn-CN: 基本使用
+    zh-CN: 基本使用
     en-US: Basic usage
 ---
 
diff --git a/components/input/demo/group.md b/components/input/demo/group.md
index 1f7ef0f024..01e98cae3c 100644
--- a/components/input/demo/group.md
+++ b/components/input/demo/group.md
@@ -1,7 +1,7 @@
 ---
 order: 3
 title: 
-    zn-CN: 输入框组合
+    zh-CN: 输入框组合
     en-US: Input Group
 ---
 
diff --git a/components/input/demo/search-input.md b/components/input/demo/search-input.md
index 60f3106122..f5495e8126 100644
--- a/components/input/demo/search-input.md
+++ b/components/input/demo/search-input.md
@@ -1,7 +1,7 @@
 ---
 order: 4
 title:
-    zn-CN: 搜索框
+    zh-CN: 搜索框
     en-US: Search box
 ---