diff --git a/docs/zh/guide/change-log.md b/docs/zh/guide/change-log.md
index fdef1234..766174dc 100644
--- a/docs/zh/guide/change-log.md
+++ b/docs/zh/guide/change-log.md
@@ -24,6 +24,7 @@
 * [ 修复 ] 侧边栏内容超过一屏后显示错误
 * [ 新增 ] 自定义滚动条演示页面
 * [ 新增 ] 流星主题新增背景图片上层的半透明遮罩
+* [ 修复 ] 主题设置失效bug
 
 ## v1.0.0
 
diff --git a/src/store/modules/theme.js b/src/store/modules/theme.js
index 34fbb8e4..2c34a902 100644
--- a/src/store/modules/theme.js
+++ b/src/store/modules/theme.js
@@ -45,7 +45,9 @@ export default {
       // 设置 store
       state.name = name
       // 设置 Cookie
-      Cookies.set('themeName', name)
+      Cookies.set('themeName', name, {
+        expires: 365
+      })
       // 激活主题
       this.commit('activeTheme')
     },