diff --git a/miniapp/pages/index/index.js b/miniapp/pages/index/index.js
index 93a1d28..255e6a5 100644
--- a/miniapp/pages/index/index.js
+++ b/miniapp/pages/index/index.js
@@ -203,6 +203,24 @@ function getThemeListScrollTopByIndex(index, totalCount) {
   return safeIndex * THEME_ROW_HEIGHT_PX;
 }
 
+/**
+ * 将列索引数组归一化为升序数字数组，避免数字/字符串混用导致 UI 判断失效。
+ */
+function normalizeColumnIndexArray(indices) {
+  const source = Array.isArray(indices) ? indices : [];
+  const uniqueMap = {};
+  source.forEach((item) => {
+    const numeric = Number(item);
+    if (!Number.isNaN(numeric) && Number.isFinite(numeric)) {
+      uniqueMap[numeric] = true;
+    }
+  });
+
+  return Object.keys(uniqueMap)
+    .map((item) => Number(item))
+    .sort((a, b) => a - b);
+}
+
 /**
  * 统一错误文案：
  * - xlsx 解析能力缺失时，固定提示用户去“构建 npm”
@@ -957,11 +975,11 @@ Page({
     if (Number.isNaN(index)) {
       return;
     }
-    const current = this.data.sourceDescriptionColumns || [];
+    const current = normalizeColumnIndexArray(this.data.sourceDescriptionColumns);
     const exists = current.indexOf(index) >= 0;
     const next = exists
       ? current.filter((item) => item !== index)
-      : current.concat(index).sort((a, b) => a - b);
+      : normalizeColumnIndexArray(current.concat(index));
     this.setData(
       {
         sourceDescriptionColumns: next
@@ -977,11 +995,11 @@ Page({
     if (Number.isNaN(index)) {
       return;
     }
-    const current = this.data.targetDescriptionColumns || [];
+    const current = normalizeColumnIndexArray(this.data.targetDescriptionColumns);
     const exists = current.indexOf(index) >= 0;
     const next = exists
       ? current.filter((item) => item !== index)
-      : current.concat(index).sort((a, b) => a - b);
+      : normalizeColumnIndexArray(current.concat(index));
     this.setData(
       {
         targetDescriptionColumns: next
@@ -1021,8 +1039,8 @@ Page({
         },
         {
           sourceDataColumn: this.data.sourceDataColumn,
-          sourceDescriptionColumns: this.data.sourceDescriptionColumns || [],
-          targetDescriptionColumns: this.data.targetDescriptionColumns || [],
+          sourceDescriptionColumns: normalizeColumnIndexArray(this.data.sourceDescriptionColumns),
+          targetDescriptionColumns: normalizeColumnIndexArray(this.data.targetDescriptionColumns),
           delimiter: '-'
         }
       );
diff --git a/miniapp/pages/index/index.wxml b/miniapp/pages/index/index.wxml
index 4a8ed45..49c8dcd 100644
--- a/miniapp/pages/index/index.wxml
+++ b/miniapp/pages/index/index.wxml
@@ -106,7 +106,7 @@
           </view>
           <view class="column-list" wx:if="{{sectionVisibleSourceData}}">
             <view class="column-list-line" />
-            <view class="row" wx:for="{{columnHeaders}}" wx:key="*this" data-index="{{index}}" bindtap="onSelectSourceData">
+            <view class="row" wx:for="{{columnHeaders}}" wx:key="index" data-index="{{index}}" bindtap="onSelectSourceData">
               <view class="row-link" />
               <image src="../../assets/icons/data.svg" mode="aspectFit" />
               <text class="label">{{item}}</text>
@@ -128,12 +128,12 @@
           </view>
           <view class="column-list" wx:if="{{sectionVisibleSourceDesc}}">
             <view class="column-list-line" />
-            <view class="row" wx:for="{{columnHeaders}}" wx:key="*this" data-index="{{index}}" bindtap="onToggleSourceDesc">
+            <view class="row" wx:for="{{columnHeaders}}" wx:key="index" data-index="{{index}}" bindtap="onToggleSourceDesc">
               <view class="row-link" />
               <image src="../../assets/icons/description.svg" mode="aspectFit" />
               <text class="label">{{item}}</text>
               <image
-                src="{{sourceDescriptionColumns.indexOf(index) > -1 ? '../../assets/icons/checkbox.svg' : '../../assets/icons/checkbox-no.svg'}}"
+                src="{{(sourceDescriptionColumns.indexOf(index) > -1 || sourceDescriptionColumns.indexOf(index + '') > -1) ? '../../assets/icons/checkbox.svg' : '../../assets/icons/checkbox-no.svg'}}"
                 mode="aspectFit"
               />
             </view>
@@ -150,12 +150,12 @@
           </view>
           <view class="column-list" wx:if="{{sectionVisibleTargetDesc}}">
             <view class="column-list-line" />
-            <view class="row" wx:for="{{columnHeaders}}" wx:key="*this" data-index="{{index}}" bindtap="onToggleTargetDesc">
+            <view class="row" wx:for="{{columnHeaders}}" wx:key="index" data-index="{{index}}" bindtap="onToggleTargetDesc">
               <view class="row-link" />
               <image src="../../assets/icons/description.svg" mode="aspectFit" />
               <text class="label">{{item}}</text>
               <image
-                src="{{targetDescriptionColumns.indexOf(index) > -1 ? '../../assets/icons/checkbox.svg' : '../../assets/icons/checkbox-no.svg'}}"
+                src="{{(targetDescriptionColumns.indexOf(index) > -1 || targetDescriptionColumns.indexOf(index + '') > -1) ? '../../assets/icons/checkbox.svg' : '../../assets/icons/checkbox-no.svg'}}"
                 mode="aspectFit"
               />
             </view>