diff --git a/backend/app/routes/spam_routes.py b/backend/app/routes/spam_routes.py
index 3d62970..5399739 100644
--- a/backend/app/routes/spam_routes.py
+++ b/backend/app/routes/spam_routes.py
@@ -1,4 +1,4 @@
-from flask import Blueprint, current_app, request
+from flask import Blueprint, current_app, request, send_file, after_this_request
 from flask_jwt_extended import jwt_required
 
 from app.extensions import db
@@ -367,3 +367,56 @@ def import_samples():
 
     db.session.commit()
     return ok({"created": created, "updated": updated}, "样本导入完成")
+
+
+@spam_bp.post("/export/xlsx")
+@jwt_required()
+def export_xlsx():
+    user = current_user()
+    if not user:
+        return fail("用户不存在", 404)
+
+    payload = request.get_json(silent=True) or {}
+    items = payload.get("items") or []
+    if not isinstance(items, list) or not items:
+        return fail("items 必须是非空数组", 400)
+
+    import os
+    import tempfile
+    import pandas as pd
+
+    rows = []
+    for item in items:
+        tokens = item.get("reason_tokens") or []
+        token_str = "; ".join(t.get("token", "") for t in tokens) if isinstance(tokens, list) else ""
+        prediction_text = "垃圾信息" if item.get("prediction") == "spam" else "正常信息"
+
+        rows.append({
+            "文本": item.get("text", ""),
+            "判定结果": prediction_text,
+            "分类标签": item.get("category_label", ""),
+            "置信度": f"{float(item.get("confidence", 0) or 0) * 100:.2f}%",
+            "垃圾概率": f"{float(item.get("spam_probability", 0) or 0) * 100:.2f}%",
+            "正常概率": f"{float(item.get("ham_probability", 0) or 0) * 100:.2f}%",
+            "风险关键词": token_str,
+        })
+
+    df = pd.DataFrame(rows)
+    tmp = tempfile.NamedTemporaryFile(suffix=".xlsx", delete=False)
+    tmp.close()
+    df.to_excel(tmp.name, index=False, engine="openpyxl")
+
+    @after_this_request
+    def cleanup(response):
+        try:
+            os.unlink(tmp.name)
+        except Exception:
+            pass
+        return response
+
+    return send_file(
+        tmp.name,
+        mimetype="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        as_attachment=True,
+        download_name="batch_detect.xlsx",
+    )
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 08fd22b..9843c52 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -11,3 +11,4 @@ joblib==1.4.2
 python-dotenv==1.0.1
 requests==2.32.3
 Werkzeug==3.1.3
+openpyxl==3.1.5
diff --git a/miniprogram/pages/batch/index.js b/miniprogram/pages/batch/index.js
index dda7ece..8570236 100644
--- a/miniprogram/pages/batch/index.js
+++ b/miniprogram/pages/batch/index.js
@@ -141,46 +141,66 @@ Page({
     return [headers.join(','), ...rows].join('\n')
   },
 
-  exportCSV() {
+  exportXLSX() {
     const items = this.data.items
     if (!items.length) {
       wx.showToast({ title: '暂无识别结果可导出', icon: 'none' })
       return
     }
 
-    const csvContent = this.generateCSV()
-    const timestamp = new Date().toISOString().slice(0, 19).replace(/[T:]/g, '-')
-    const filename = `batch_detect_${timestamp}.csv`
+    wx.showLoading({ title: '生成文件中...' })
 
-    // 写入临时文件
-    const fs = wx.getFileSystemManager()
-    const tempPath = `${wx.env.USER_DATA_PATH}/${filename}`
+    const app = getApp()
+    const token = app.globalData.token || wx.getStorageSync('token') || ''
+    const baseURL = app.globalData.baseURL || 'http://127.0.0.1:5000/api'
 
-    try {
-      fs.writeFileSync(tempPath, csvContent, 'utf8')
-      wx.showModal({
-        title: '导出成功',
-        content: `CSV文件已生成，是否打开查看？\n文件名：${filename}`,
-        confirmText: '打开',
-        cancelText: '关闭',
-        success: (res) => {
-          if (res.confirm) {
-            wx.openDocument({
-              filePath: tempPath,
-              fileType: 'csv',
-              showMenu: true,
-              fail: (err) => {
-                console.error('打开文件失败', err)
-                wx.showToast({ title: '打开失败，请检查文件管理器', icon: 'none' })
-              }
-            })
-          }
+    wx.request({
+      url: `${baseURL}/spam/export/xlsx`,
+      method: 'POST',
+      data: { items },
+      header: {
+        'Content-Type': 'application/json',
+        Authorization: `Bearer ${token}`
+      },
+      responseType: 'arraybuffer',
+      success(res) {
+        wx.hideLoading()
+
+        if (res.statusCode !== 200) {
+          wx.showToast({ title: '导出失败', icon: 'none' })
+          return
         }
-      })
-    } catch (err) {
-      console.error('写入文件失败', err)
-      wx.showToast({ title: '导出失败', icon: 'none' })
-    }
+
+        const timestamp = new Date().toISOString().slice(0, 19).replace(/[T:]/g, '-')
+        const filename = `batch_detect_${timestamp}.xlsx`
+        const fs = wx.getFileSystemManager()
+        const tempPath = `${wx.env.USER_DATA_PATH}/${filename}`
+
+        try {
+          fs.writeFileSync(tempPath, res.data)
+          wx.openDocument({
+            filePath: tempPath,
+            fileType: 'xlsx',
+            showMenu: true,
+            success: () => {
+              wx.showToast({ title: '导出成功', icon: 'success' })
+            },
+            fail: (err) => {
+              console.error('打开文件失败', err)
+              wx.showToast({ title: '打开失败', icon: 'none' })
+            }
+          })
+        } catch (err) {
+          console.error('写入文件失败', err)
+          wx.showToast({ title: '导出失败', icon: 'none' })
+        }
+      },
+      fail(err) {
+        wx.hideLoading()
+        console.error('导出请求失败', err)
+        wx.showToast({ title: '导出失败，请检查网络', icon: 'none' })
+      }
+    })
   },
 
   copyCSVToClipboard() {
diff --git a/miniprogram/pages/batch/index.wxml b/miniprogram/pages/batch/index.wxml
index ba3f31e..f9219e7 100644
--- a/miniprogram/pages/batch/index.wxml
+++ b/miniprogram/pages/batch/index.wxml
@@ -77,7 +77,7 @@
   <view class="card fade-up fade-up-delay-3" wx:if="{{items.length}}">
     <view class="card-title">明细结果</view>
     <view class="btn-row" style="margin-bottom: 12rpx;">
-      <button class="btn btn-ghost" bindtap="exportCSV">导出CSV文件</button>
+      <button class="btn btn-ghost" bindtap="exportXLSX">导出Excel文件</button>
       <button class="btn btn-ghost" bindtap="copyCSVToClipboard">复制CSV内容</button>
     </view>
     <view class="list-item" wx:for="{{items}}" wx:key="index">