diff --git a/admin-frontend-vue/src/pages/records/RecordsHistoryPage.vue b/admin-frontend-vue/src/pages/records/RecordsHistoryPage.vue
index d90c0ecc..37b642f0 100644
--- a/admin-frontend-vue/src/pages/records/RecordsHistoryPage.vue
+++ b/admin-frontend-vue/src/pages/records/RecordsHistoryPage.vue
@@ -2,11 +2,12 @@
 /** 历史生成记录页（module 13 task 259 对齐 admin panel-history）：指定用户下拉 + 起止时间筛选、类型中文、≤3 缩略图、大图预览、空态。 */
 import { formatDateTime } from '@/utils/datetime'
 import { computed, onMounted, reactive, ref } from 'vue'
-import { fetchHistoryList, fetchHistoryUserOptions } from './history-api.ts'
+import { fetchHistoryList, fetchHistoryUserOptions, clearHistory } from './history-api.ts'
 import type { HistoryUserOption } from './history-user-option.ts'
 import type { HistoryRecordItem } from './history-dto.ts'
 import { historyEmptyText, historyErrorText } from './history-feedback.ts'
 import { historyPanelTypeLabel } from './history-type.ts'
+import { ElMessage, ElMessageBox } from 'element-plus'
 
 const loading = ref(false)
 const userLoading = ref(false)
@@ -98,6 +99,32 @@ function openPreview(item: HistoryRecordItem) {
   previewVisible.value = true
 }
 
+const clearing = ref(false)
+
+/** 清空全部生成记录：二次确认后调后端 DELETE /api/admin/history。 */
+async function clearAll() {
+  try {
+    await ElMessageBox.confirm('确定清空全部生成记录吗？该操作会删除所有历史数据，无法恢复。', '清理生成记录', {
+      confirmButtonText: '确认清空',
+      cancelButtonText: '取消',
+      type: 'warning',
+    })
+  } catch {
+    return
+  }
+  clearing.value = true
+  try {
+    const removed = await clearHistory()
+    ElMessage.success(`已清空 ${removed} 条生成记录`)
+    page.value = 1
+    await load()
+  } catch (error) {
+    ElMessage.error(error instanceof Error ? error.message : '清理失败')
+  } finally {
+    clearing.value = false
+  }
+}
+
 onMounted(() => {
   load()
   loadUserOptions()
@@ -111,6 +138,9 @@ onMounted(() => {
         <h2>生成记录</h2>
         <p>查看各用户在后台生成的历史记录与结果图。</p>
       </div>
+      <div class="heading-actions">
+        <el-button type="danger" plain :loading="clearing" @click="clearAll">清理数据</el-button>
+      </div>
     </div>
 
     <el-card shadow="never" class="filter-card">
diff --git a/admin-frontend-vue/src/pages/records/history-api.ts b/admin-frontend-vue/src/pages/records/history-api.ts
index e28f29a7..ce6a99d6 100644
--- a/admin-frontend-vue/src/pages/records/history-api.ts
+++ b/admin-frontend-vue/src/pages/records/history-api.ts
@@ -17,3 +17,11 @@ export async function fetchHistoryUserOptions(): Promise<HistoryUserOption[]> {
   const { data } = await http.get<unknown>('/api/admin/users', { params: { page: 1, page_size: 999 } })
   return parseHistoryUserOptions(data)
 }
+
+/** 清空全部生成记录（验收反馈：生成记录数据要可清理）。返回清理条数。 */
+export async function clearHistory(): Promise<number> {
+  const { data } = await http.delete<unknown>(HISTORY_ENDPOINT)
+  const record = data && typeof data === 'object' ? (data as Record<string, unknown>) : null
+  const removed = record?.data
+  return typeof removed === 'number' ? removed : 0
+}
diff --git a/admin-frontend-vue/tests/align-history-clear.test.ts b/admin-frontend-vue/tests/align-history-clear.test.ts
new file mode 100644
index 00000000..f2086f2f
--- /dev/null
+++ b/admin-frontend-vue/tests/align-history-clear.test.ts
@@ -0,0 +1,34 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+
+// 验收反馈：生成记录的数据要可清理。
+// 契约：页面有「清理数据」入口(二次确认)、前端 DELETE /api/admin/history、后端清空端点与日志。
+
+test('align_history_clear_normal_primary_path', () => {
+  const page = readSource('src/pages/records/RecordsHistoryPage.vue')
+  assert.match(page, /清理数据/, '页头有清理数据按钮')
+  assert.match(page, /确定清空全部生成记录吗/, '清理前需二次确认')
+  assert.match(page, /clearHistory\(\)/, '页面调用清理 API')
+})
+
+test('align_history_clear_normal_variant_input', () => {
+  const api = readSource('src/pages/records/history-api.ts')
+  assert.match(api, /http\.delete<unknown>\(HISTORY_ENDPOINT\)/, '清理走 DELETE /api/admin/history')
+  assert.match(api, /clearHistory/, '暴露 clearHistory 适配函数')
+})
+
+test('align_history_clear_boundary_empty_input', () => {
+  const page = readSource('src/pages/records/RecordsHistoryPage.vue')
+  assert.match(page, /已清空 \$\{removed\} 条生成记录/, '成功提示含清理条数')
+})
+
+test('align_history_clear_dependency_failure_returns_actionable_message', () => {
+  // 后端契约：DELETE /history 端点 + service 清空 + 中文排查日志。
+  const ctrl = readSource('../backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/controller/ImageHistoryController.java')
+  assert.match(ctrl, /@DeleteMapping\("\/history"\)/, '后端有 DELETE /api/admin/history 端点')
+  assert.match(ctrl, /admin_history/, '清理端点沿用生成记录模块权限')
+  const service = readSource('../backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/service/ImageHistoryService.java')
+  assert.match(service, /clearAllHistory/, 'service 有清空方法')
+  assert.match(service, /清空生成记录，共清理/, '清空操作留中文排查日志')
+})
diff --git a/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/controller/ImageHistoryController.java b/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/controller/ImageHistoryController.java
index 84eb878a..c99360f6 100644
--- a/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/controller/ImageHistoryController.java
+++ b/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/controller/ImageHistoryController.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -43,4 +44,15 @@ public class ImageHistoryController {
         ImageHistoryListVo vo = imageHistoryService.listHistory(page, pageSize, userId, timeStart, timeEnd);
         return ApiResponse.success(vo);
     }
+
+    @DeleteMapping("/history")
+    @Operation(summary = "清空全部生成记录")
+    public ApiResponse<Long> clearHistory(HttpServletRequest request) {
+        AdminUserEntity operator = adminAuthSupport.requireAdminOrInternal(request);
+        if (!permissionMenuService.hasAnyAdminMenu(operator, List.of("admin_history"))) {
+            throw new BusinessException(403, "无权访问生成记录模块");
+        }
+        long removed = imageHistoryService.clearAllHistory(operator.getUsername());
+        return ApiResponse.success(removed);
+    }
 }
diff --git a/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/service/ImageHistoryService.java b/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/service/ImageHistoryService.java
index f2a34ca5..36c7e644 100644
--- a/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/service/ImageHistoryService.java
+++ b/backend-java/src/main/java/com/nanri/aiimage/modules/imagehistory/service/ImageHistoryService.java
@@ -49,24 +49,21 @@ public class ImageHistoryService {
         if (safeSize < 10) safeSize = 10;
         if (safeSize > 50) safeSize = 50;
 
-        LambdaQueryWrapper<ImageHistoryEntity> query = new LambdaQueryWrapper<>();
-        if (userId != null && userId > 0) {
-            query.eq(ImageHistoryEntity::getUserId, userId);
-        }
         LocalDateTime startDt = parseDateTime(timeStart, false);
-        if (startDt != null) {
-            query.ge(ImageHistoryEntity::getCreatedAt, startDt);
-        }
         LocalDateTime endDt = parseDateTime(timeEnd, true);
-        if (endDt != null) {
-            query.le(ImageHistoryEntity::getCreatedAt, endDt);
-        }
 
-        Long total = imageHistoryMapper.selectCount(query);
-        query.orderByDesc(ImageHistoryEntity::getCreatedAt);
+        Long total = imageHistoryMapper.selectCount(filterOf(userId, startDt, endDt));
+
+        // 先只取本页 id（仅排 id/时间小列，避免对大文本 filesort 撑爆 sort buffer），再按 id 取行。
+        LambdaQueryWrapper<ImageHistoryEntity> idPage = filterOf(userId, startDt, endDt)
+                .select(ImageHistoryEntity::getId)
+                .orderByDesc(ImageHistoryEntity::getCreatedAt);
         int offset = (safePage - 1) * safeSize;
-        query.last("LIMIT " + safeSize + " OFFSET " + offset);
-        List<ImageHistoryEntity> rows = imageHistoryMapper.selectList(query);
+        idPage.last("LIMIT " + safeSize + " OFFSET " + offset);
+        List<Long> pageIds = imageHistoryMapper.selectList(idPage).stream()
+                .map(ImageHistoryEntity::getId)
+                .toList();
+        List<ImageHistoryEntity> rows = rowsByIds(pageIds);
 
         Map<Long, String> usernameMap = loadUsernameMap(rows);
 
@@ -83,6 +80,50 @@ public class ImageHistoryService {
         return vo;
     }
 
+    /** 清空全部生成记录（验收反馈：生成记录数据要可清理）。返回清理条数。 */
+    public long clearAllHistory(String operatorName) {
+        Long count = imageHistoryMapper.selectCount(new LambdaQueryWrapper<>());
+        long removed = count == null ? 0L : count;
+        imageHistoryMapper.delete(new LambdaQueryWrapper<>());
+        log.info("[image-history] 管理员 {} 清空生成记录，共清理 {} 条", operatorName == null ? "unknown" : operatorName, removed);
+        return removed;
+    }
+
+    /** 按用户/时间范围构造筛选条件（不排序、不分页）。 */
+    private LambdaQueryWrapper<ImageHistoryEntity> filterOf(Long userId, LocalDateTime startDt, LocalDateTime endDt) {
+        LambdaQueryWrapper<ImageHistoryEntity> filter = new LambdaQueryWrapper<>();
+        if (userId != null && userId > 0) {
+            filter.eq(ImageHistoryEntity::getUserId, userId);
+        }
+        if (startDt != null) {
+            filter.ge(ImageHistoryEntity::getCreatedAt, startDt);
+        }
+        if (endDt != null) {
+            filter.le(ImageHistoryEntity::getCreatedAt, endDt);
+        }
+        return filter;
+    }
+
+    /** 按本页 id 顺序回表取完整行（id 集合小，避免对全量大文本字段排序）。 */
+    private List<ImageHistoryEntity> rowsByIds(List<Long> ids) {
+        if (ids == null || ids.isEmpty()) {
+            return Collections.emptyList();
+        }
+        List<ImageHistoryEntity> fetched = imageHistoryMapper.selectBatchIds(ids);
+        Map<Long, ImageHistoryEntity> byId = new HashMap<>(fetched.size() * 2);
+        for (ImageHistoryEntity row : fetched) {
+            byId.put(row.getId(), row);
+        }
+        List<ImageHistoryEntity> ordered = new ArrayList<>(ids.size());
+        for (Long id : ids) {
+            ImageHistoryEntity row = byId.get(id);
+            if (row != null) {
+                ordered.add(row);
+            }
+        }
+        return ordered;
+    }
+
     private Map<Long, String> loadUsernameMap(List<ImageHistoryEntity> rows) {
         Set<Long> userIds = new LinkedHashSet<>();
         for (ImageHistoryEntity r : rows) {