diff --git a/packages/vant-cli/site/common/index.js b/packages/vant-cli/site/common/index.js
index dcfb367e968..166c9f1efaa 100644
--- a/packages/vant-cli/site/common/index.js
+++ b/packages/vant-cli/site/common/index.js
@@ -4,7 +4,7 @@ const isMobile = /ios|iphone|ipod|ipad|android/.test(ua);
 export function decamelize(str, sep = '-') {
   return str
     .replace(/([a-z\d])([A-Z])/g, '$1' + sep + '$2')
-    .replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + sep + '$2')
+    .replace(/([A-Z])([A-Z][a-z\d]+)/g, '$1' + sep + '$2')
     .toLowerCase();
 }
 
diff --git a/packages/vant-cli/src/common/index.ts b/packages/vant-cli/src/common/index.ts
index 2bbe6d085aa..bb027de5c91 100644
--- a/packages/vant-cli/src/common/index.ts
+++ b/packages/vant-cli/src/common/index.ts
@@ -72,7 +72,7 @@ export function pascalize(str: string): string {
 export function decamelize(str: string, sep = '-') {
   return str
     .replace(/([a-z\d])([A-Z])/g, '$1' + sep + '$2')
-    .replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + sep + '$2')
+    .replace(/([A-Z])([A-Z][a-z\d]+)/g, '$1' + sep + '$2')
     .toLowerCase();
 }