diff --git a/frontend/src/utils/StringUtils.js b/frontend/src/utils/StringUtils.js
index 6124dc0dcc..6886395dc5 100644
--- a/frontend/src/utils/StringUtils.js
+++ b/frontend/src/utils/StringUtils.js
@@ -5,3 +5,14 @@ export function pdfTemplateReplaceAll(content, source, target) {
   return content
 }
 
+export function randomRange(min, max) {
+  let returnStr = ''
+  const range = (max ? Math.round(Math.random() * (max - min)) + min : min)
+  const charStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
+
+  for (var i = 0; i < range; i++) {
+    var index = Math.round(Math.random() * (charStr.length - 1))
+    returnStr += charStr.substring(index, index + 1)
+  }
+  return returnStr
+}
diff --git a/frontend/src/views/link/generate/index.vue b/frontend/src/views/link/generate/index.vue
index d307a58eeb..864c26b205 100644
--- a/frontend/src/views/link/generate/index.vue
+++ b/frontend/src/views/link/generate/index.vue
@@ -77,6 +77,7 @@ import {
   shortUrl,
   setOverTime
 } from '@/api/link'
+import { randomRange } from '@/utils/StringUtils'
 export default {
 
   name: 'LinkGenerate',
@@ -171,14 +172,7 @@ export default {
     },
 
     createPwd() {
-      const randomNum = () => {
-        return Math.floor(Math.random() * 10) + ''
-      }
-      let result = ''
-      for (let index = 0; index < this.pwdNums; index++) {
-        result += randomNum()
-      }
-      return result
+      return randomRange(this.pwdNums)
     },
 
     resetPwd() {