diff --git a/pages/index/index.js b/pages/index/index.js
index 4cb118b..28b04de 100644
--- a/pages/index/index.js
+++ b/pages/index/index.js
@@ -1583,8 +1583,14 @@ Page({
         const updatedCategories = categories.map(category => {
           return category === '白壳' ? '土鸡蛋' : category;
         });
+        // 确保"全部"在第一位
+        if (!updatedCategories.includes('全部')) {
+          updatedCategories.unshift('全部');
+        }
+        // 去除重复项
+        const uniqueCategories = [...new Set(updatedCategories)];
         this.setData({
-          categories: updatedCategories
+          categories: uniqueCategories
         });
       }
     }).catch(err => {