diff --git a/_config.yml b/_config.yml
index 45d27b8..ceb3e14 100644
--- a/_config.yml
+++ b/_config.yml
@@ -33,6 +33,7 @@ experiments:
     enableCover: true # 是否开启头图
     enablePreload: true #是否开启预加载头图
     enableNextGradientCover: false # 使用CSS渐变作为上/下一页封面
+  copyrightLength: 50 # 自定义复制时显示copyright的长度
 
 homeConfig:
   gradient: false # 使用CSS渐变作为文章封面
@@ -101,13 +102,13 @@ polyfill:
 # 参阅 https://github.com/D-Sketon/mouse-firework
 fireworks:
   enable: true
-  options: 
+  options:
     excludeElements: ["a"]
     particles:
       - shape: circle
         move: ["emit"]
         easing: easeOutExpo
-        colors: 
+        colors:
           - "rgba(255,182,185,.9)"
           - "rgba(250,227,217,.9)"
           - "rgba(187,222,214,.9)"
@@ -227,7 +228,6 @@ summary:
     remote: "https://api.openai.com"
     apikey: "key"
 
-
 # Social Links
 # Usage: `Key: permalink || icon || color`
 # Key is the link label showing to end users.
@@ -403,4 +403,4 @@ vendors:
     justifiedGallery:
       source: cdnjs
       url: justifiedGallery/3.8.1/css/justifiedGallery.min.css
-      sri: "sha384-V/1Ew9pYm8xpy/L9i078ZXT6HSEOrGC6KNFYLbXOdtqb3+c6brpGqVzZtEPSQOiz"
\ No newline at end of file
+      sri: "sha384-V/1Ew9pYm8xpy/L9i078ZXT6HSEOrGC6KNFYLbXOdtqb3+c6brpGqVzZtEPSQOiz"
diff --git a/scripts/generaters/script.ts b/scripts/generaters/script.ts
index 52ea094..5c12f65 100644
--- a/scripts/generaters/script.ts
+++ b/scripts/generaters/script.ts
@@ -45,6 +45,9 @@ hexo.extend.generator.register('script', function (locals) {
       priority: theme.quicklink.priority
     },
     playerAPI: theme.playerAPI,
+    experiments: {
+      copyrightLength: theme.experiments.copyrightLength,
+    },
     audio: undefined,
     fireworks: (theme.fireworks && theme.fireworks.enable && theme.fireworks.options)
       ? theme.fireworks.options
diff --git a/source/js/_app/library/declare.d.ts b/source/js/_app/library/declare.d.ts
index 30d560a..ff1974d 100644
--- a/source/js/_app/library/declare.d.ts
+++ b/source/js/_app/library/declare.d.ts
@@ -115,6 +115,9 @@ interface configType {
     priority: boolean
   }
   playerAPI: string
+  experiments: {
+    copyrightLength: number;
+  }
 }
 // esbuild 静态常量
 declare const __shokax_player__:boolean
diff --git a/source/js/_app/page/post.ts b/source/js/_app/page/post.ts
index df520a9..63f2ce8 100644
--- a/source/js/_app/page/post.ts
+++ b/source/js/_app/page/post.ts
@@ -1,7 +1,7 @@
 import { $dom } from '../library/dom'
 import { postFancybox } from './fancybox'
 import { clipBoard, showtip } from '../globals/tools'
-import { BODY } from '../globals/globalVars'
+import { CONFIG, BODY } from '../globals/globalVars'
 import { pageScroll, transition } from '../library/anime'
 import { mediaPlayer } from '../player'
 import { getDisplay, setDisplay, wrapObject } from '../library/proto'
@@ -22,7 +22,7 @@ export const postBeauty = () => {
     }
 
     const copyright = document.getElementById('copyright')
-    if (window.getSelection().toString().length > 30 && copyright) {
+    if (window.getSelection().toString().length > CONFIG.experiments.copyrightLength && copyright) {
       event.preventDefault()
       const author = '# ' + (copyright.querySelector('.author') as HTMLElement).innerText
       const link = '# ' + (copyright.querySelector('.link') as HTMLElement).innerText