diff --git a/backend/models/conduct.py b/backend/models/conduct.py
index e8d8f6a..0d120eb 100644
--- a/backend/models/conduct.py
+++ b/backend/models/conduct.py
@@ -82,7 +82,8 @@ class ConductModel:
         offset: int = 0,
         start_date: str = None,
         end_date: str = None,
-        student_id: int = None
+        student_id: int = None,
+        include_revoked: bool = True
     ) -> List[Dict[str, Any]]:
         """获取所有记录（班主任/班长专用）"""
         # 空字符串转为None
@@ -96,8 +97,10 @@ class ConductModel:
             FROM conduct_records cr
             JOIN students s ON cr.student_id = s.student_id
             JOIN users u ON cr.recorder_id = u.user_id
-            WHERE cr.is_revoked = 0
+            WHERE 1=1
         """
+        if not include_revoked:
+            sql += " AND cr.is_revoked = 0"
         params = []
         
         if student_id:
@@ -210,6 +213,21 @@ class ConductModel:
             logger.error(f"撤销记录失败: {e}")
             return False
     
+    @staticmethod
+    async def restore_record(record_id: int, restorer_id: int) -> bool:
+        """反撤销（恢复）已撤销的记录"""
+        try:
+            sql = """
+                UPDATE conduct_records
+                SET is_revoked = 0, revoked_by = NULL, revoked_at = NULL
+                WHERE record_id = %s AND is_revoked = 1
+            """
+            result = await execute_update(sql, (record_id,))
+            return result > 0
+        except Exception as e:
+            logger.error(f"恢复记录失败: {e}")
+            return False
+    
     @staticmethod
     async def batch_create_records(records_data: List[Dict]) -> List[Dict]:
         """批量创建操行分记录"""
diff --git a/backend/routes/admin.py b/backend/routes/admin.py
index 22a7dd0..9fa538f 100644
--- a/backend/routes/admin.py
+++ b/backend/routes/admin.py
@@ -231,6 +231,33 @@ async def revoke_conduct_record(request: Request, req: RevokeRequest):
         return error_response(message=result["message"])
 
 
+@router.post("/conduct/restore")
+async def restore_conduct_record(request: Request, req: RevokeRequest):
+    """反撤销（恢复）已撤销的记录"""
+    user = await get_current_user(request)
+    result = await ConductService.restore_record(
+        record_id=req.record_id,
+        restorer_id=user["user_id"]
+    )
+    if result["success"]:
+        record = result.get("record", {})
+        await LogService.write_operation_log(
+            operator_id=user["user_id"], operator_name=user["username"],
+            operator_role="班主任", operation_type="restore_record",
+            target_type="conduct", target_id=req.record_id,
+            details=(
+                f"反撤销记录ID: {req.record_id}, "
+                f"原操作人: {record.get('recorder_name', '未知')}, "
+                f"原分值变动: {'+' if record.get('points_change', 0) > 0 else ''}{record.get('points_change', 0)}分, "
+                f"反撤销操作人: {user['username']}"
+            ),
+            ip=request.client.host
+        )
+        return success_response(message="反撤销成功")
+    else:
+        return error_response(message=result["message"])
+
+
 @router.get("/conduct/history")
 async def get_conduct_history(
     request: Request,
diff --git a/backend/services/conduct_service.py b/backend/services/conduct_service.py
index c6c0d43..facd2ee 100644
--- a/backend/services/conduct_service.py
+++ b/backend/services/conduct_service.py
@@ -152,6 +152,42 @@ class ConductService:
         else:
             return {"success": False, "message": "撤销失败"}
     
+    @staticmethod
+    async def restore_record(record_id: int, restorer_id: int) -> Dict[str, Any]:
+        """反撤销（恢复）已撤销的记录"""
+        # 检查权限：只有班主任可以反撤销
+        role = await PermissionChecker.get_user_role(restorer_id)
+        if role != "班主任":
+            return {"success": False, "message": "仅班主任可反撤销记录"}
+        
+        # 获取原记录信息
+        record = await ConductModel.get_record_by_id(record_id)
+        if not record:
+            return {"success": False, "message": "记录不存在"}
+        
+        if not record.get("is_revoked"):
+            return {"success": False, "message": "该记录未被撤销，无需恢复"}
+        
+        # 恢复记录
+        result = await ConductModel.restore_record(record_id, restorer_id)
+        
+        if result:
+            # 恢复学生总分（重新加上原来的分数变动）
+            await StudentModel.update_total_points(record["student_id"], record["points_change"])
+            logger.info(f"用户[{restorer_id}] 反撤销了记录[{record_id}]")
+            return {
+                "success": True,
+                "message": "反撤销成功",
+                "record": {
+                    "student_id": record["student_id"],
+                    "recorder_name": record.get("recorder_name", "未知"),
+                    "points_change": record["points_change"],
+                    "reason": record.get("reason", "")
+                }
+            }
+        else:
+            return {"success": False, "message": "反撤销失败"}
+    
     @staticmethod
     async def get_history(
         user_id: int,
@@ -193,7 +229,7 @@ class ConductService:
             
             # 获取总数
             from utils.database import execute_one
-            count_conditions = ["cr.is_revoked = 0"]
+            count_conditions = ["1=1"]
             count_params = []
             if student_id:
                 count_conditions.append("cr.student_id = %s")
diff --git a/frontend/admin/history.php b/frontend/admin/history.php
index 0e0264c..270a523 100644
--- a/frontend/admin/history.php
+++ b/frontend/admin/history.php
@@ -53,7 +53,6 @@ include __DIR__ . '/../includes/header.php';
                     <tr>
                         <th>时间</th>
                         <th>学生</th>
-                        <th>人数</th>
                         <th>分数变动</th>
                         <th>原因</th>
                         <th>操作人</th>
@@ -92,8 +91,7 @@ async function loadHistory(page = 1) {
     const params = {
         page, page_size: 20,
         start_date: startDate,
-        end_date: endDate,
-        grouped: true
+        end_date: endDate
     };
     if (studentId) params.student_id = studentId;
     
@@ -103,21 +101,31 @@ async function loadHistory(page = 1) {
         let html = '';
         res.data.records.forEach(record => {
             const pointsClass = record.points_change > 0 ? 'plus' : 'minus';
-            html += `<tr>
+            const revokedStyle = record.is_revoked == 1 ? ' style="opacity:0.5; text-decoration:line-through;"' : '';
+            html += `<tr${revokedStyle}>
                 <td>${formatDateTime(record.created_at)}</td>
-                <td>${escapeHtml(record.student_names)}</td>
-                <td>${record.student_count || 1}</td>
+                <td>${escapeHtml(record.student_name)}</td>
                 <td class="${pointsClass}">${record.points_change > 0 ? '+' : ''}${record.points_change}</td>
                 <td>${escapeHtml(record.reason)}</td>
                 <td>${escapeHtml(record.recorder_name)}</td>`;
-            <?php if ($role === '班主任' || $role === '班长'): ?>
-            html += `<td>-</td>`;
+            <?php if ($role === '班主任'): ?>
+            if (record.is_revoked == 1) {
+                html += `<td><span class="text-muted" style="margin-right:4px;">已撤销</span><button class="btn btn-sm btn-secondary" onclick="restoreRecord(${record.record_id})">反撤销</button></td>`;
+            } else {
+                html += `<td><button class="btn btn-sm btn-danger" onclick="revokeRecord(${record.record_id})">撤销</button></td>`;
+            }
+            <?php elseif ($role === '班长'): ?>
+            if (record.is_revoked == 1) {
+                html += `<td><span class="text-muted">已撤销</span></td>`;
+            } else {
+                html += `<td><button class="btn btn-sm btn-danger" onclick="revokeRecord(${record.record_id})">撤销</button></td>`;
+            }
             <?php endif; ?>
             html += `</tr>`;
         });
         
         if (res.data.records.length === 0) {
-            const colSpan = <?php echo ($role === '班主任' || $role === '班长') ? '7' : '6'; ?>;
+            const colSpan = <?php echo ($role === '班主任' || $role === '班长') ? '6' : '5'; ?>;
             html = `<tr><td colspan="${colSpan}" style="text-align:center;">暂无记录</td></tr>`;
         }
         
diff --git a/frontend/assets/js/admin.js b/frontend/assets/js/admin.js
index 2bb3d37..9141aa3 100644
--- a/frontend/assets/js/admin.js
+++ b/frontend/assets/js/admin.js
@@ -251,7 +251,7 @@ async function submitAddSubject() {
 
 // 撤销扣分记录
 async function revokeRecord(recordId) {
-    if (!confirm('确定要撤销这条扣分记录吗？')) return;
+    if (!confirm('确定要撤销这条记录吗？撤销后学生分数将恢复。')) return;
     
     const res = await apiPost('/api/admin/conduct/revoke', { record_id: recordId });
     if (res && res.success) {
@@ -262,6 +262,19 @@ async function revokeRecord(recordId) {
     }
 }
 
+// 反撤销（恢复）记录
+async function restoreRecord(recordId) {
+    if (!confirm('确定要反撤销这条记录吗？分数变动将重新生效。')) return;
+    
+    const res = await apiPost('/api/admin/conduct/restore', { record_id: recordId });
+    if (res && res.success) {
+        showToast('反撤销成功');
+        loadHistory(currentHistoryPage);
+    } else {
+        showToast(res?.message || '反撤销失败', 'error');
+    }
+}
+
 // 关闭模态框
 function closeModal(modalId) {
     const modal = document.getElementById(modalId);