diff --git a/danmu_api/apis/env-api.js b/danmu_api/apis/env-api.js
index 95997703a..74f54ee7a 100644
--- a/danmu_api/apis/env-api.js
+++ b/danmu_api/apis/env-api.js
@@ -2,6 +2,7 @@ import { jsonResponse } from '../utils/http-util.js';
 import { log } from '../utils/log-util.js';
 import { HandlerFactory } from '../configs/handlers/handler-factory.js';
 import { globals } from '../configs/globals.js';
+import { syncBangumiDataLifecycleOnConfigChange } from '../utils/bangumi-data-util.js';
 import AIClient from '../utils/ai-util.js';
 
 /**
@@ -24,6 +25,10 @@ export async function handleSetEnv(request) {
     // 调用handler的setEnv方法
     const result = await handler.setEnv(key, value);
     
+    if (result && key === 'USE_BANGUMI_DATA') {
+      syncBangumiDataLifecycleOnConfigChange(deployPlatform);
+    }
+
     if (result) {
       return jsonResponse({ success: true, message: `环境变量 ${key} 设置成功` });
     } else {
@@ -55,6 +60,10 @@ export async function handleAddEnv(request) {
     // 调用handler的addEnv方法
     const result = await handler.addEnv(key, value);
     
+    if (result && key === 'USE_BANGUMI_DATA') {
+      syncBangumiDataLifecycleOnConfigChange(deployPlatform);
+    }
+
     if (result) {
       return jsonResponse({ success: true, message: `环境变量 ${key} 添加成功` });
     } else {
@@ -86,6 +95,10 @@ export async function handleDelEnv(request) {
     // 调用handler的delEnv方法
     const result = await handler.delEnv(key);
     
+    if (result && key === 'USE_BANGUMI_DATA') {
+      syncBangumiDataLifecycleOnConfigChange(deployPlatform);
+    }
+
     if (result) {
       return jsonResponse({ success: true, message: `环境变量 ${key} 删除成功` });
     } else {
diff --git a/danmu_api/server.js b/danmu_api/server.js
index a5c1e6321..00a8cc36d 100644
--- a/danmu_api/server.js
+++ b/danmu_api/server.js
@@ -9,9 +9,9 @@ import { HttpsProxyAgent } from 'https-proxy-agent';
 import dotenv from 'dotenv';
 import { Request as NodeFetchRequest } from 'node-fetch';
 import { handleRequest } from './worker.js';
-import { Globals } from './configs/globals.js';
+import { Globals, globals } from './configs/globals.js';
 import { Envs } from './configs/envs.js';
-import { clearBangumiDataCache, initBangumiData } from './utils/bangumi-data-util.js';
+import { clearBangumiDataCache, initBangumiData, syncBangumiDataLifecycleOnConfigChange } from './utils/bangumi-data-util.js';
 import { getLocalCaches, judgeLocalCacheValid } from './utils/cache-util.js';
 import { getRedisCaches, judgeRedisValid } from './utils/redis-util.js';
 import { persistFavorites, refreshFavoriteByKeyword } from './apis/favorite-api.js';
@@ -234,10 +234,11 @@ async function setupEnvWatcher() {
           console.log('[server] Environment variables reloaded successfully');
           console.log('[server] Updated keys:', Array.from(newEnvKeys).join(', '));
 
-          // 如果检测到关闭了 Bangumi Data 功能，主动释放内存与物理磁盘缓存
-          if (process.env.USE_BANGUMI_DATA === 'false' || process.env.USE_BANGUMI_DATA === false) {
-              clearBangumiDataCache(true);
-          }
+          // 配置变更后同步 Bangumi Data 生命周期：开启则立即确保缓存就绪（缺失则下载），
+          // 关闭则释放缓存；先按真实配置同步内存开关，避免重载未刷新 globals 时状态滞后
+          const bangumiEnabled = process.env.USE_BANGUMI_DATA === 'true' || process.env.USE_BANGUMI_DATA === true;
+          globals.useBangumiData = bangumiEnabled;
+          syncBangumiDataLifecycleOnConfigChange('node');
 
         } catch (error) {
           console.log('[server] Error reloading configuration files:', error.message);
diff --git a/danmu_api/utils/bangumi-data-util.js b/danmu_api/utils/bangumi-data-util.js
index d10ad7a99..f9f2f938c 100644
--- a/danmu_api/utils/bangumi-data-util.js
+++ b/danmu_api/utils/bangumi-data-util.js
@@ -18,13 +18,11 @@ let downloadLockTime = 0;
 let memoryFootprintMB = '0.00';
 let hasLoggedCacheWarning = false;
 let charInvertedIndex = new Map();
+let currentBackgroundDownload = null; // 在途后台下载 Promise：由 initBangumiData 在发起非阻塞刷新时写入，供边缘层 ctx.waitUntil 延长 Serverless 生命周期
 
-// 当前生效的数据源标识 ('custom' | 'official')
-let activeDataSource = 'custom';
-// 缓存已解析的版本号（进程内有效）
-let cachedCustomVersion = null;
+let activeDataSource = 'custom'; // 当前生效的数据源标识 ('custom' | 'official')
+let cachedCustomVersion = null; // 缓存已解析的版本号（进程内有效）
 let cachedOfficialVersion = null;
-
 let versionQueryPromise = null; // 版本查询并发锁：serverless环境下冻结时异步信号可能不生效，共享同一Promise避免重复探测
 
 // 定义缓存目录/文件名
@@ -193,6 +191,46 @@ async function selectBestDataSource() {
     return versionQueryPromise;
 }
 
+// 数据下载触发时机：仅在 searchBangumiData 消费路径进入时触发下载；开关关闭或无所消费源时不下载
+// 开启时复用 initBangumiData 加载/下载，并发调用等待同一就绪缓存而不重复请求
+export async function ensureBangumiDataReady(deployPlatform = globals.deployPlatform) {
+    if (!globals.useBangumiData) return;
+    await initBangumiData(deployPlatform, true);
+}
+
+// 配置变更后同步 Bangumi Data 生命周期：开关开启立即下载（已缓存则幂等），关闭释放缓存
+// 调用前须保证 globals.useBangumiData 已反映最新配置（watcher 场景须先同步内存开关）
+export function syncBangumiDataLifecycleOnConfigChange(deployPlatform = globals.deployPlatform) {
+    if (globals.useBangumiData) {
+        initBangumiData(deployPlatform, true).catch(console.error);
+    } else {
+        clearBangumiDataCache(true);
+    }
+}
+
+// 读取在途后台下载 Promise，供边缘运行时在请求响应后延长生命周期（无在途时返回 null）
+export function getBackgroundDownload() {
+    return currentBackgroundDownload;
+}
+
+// 边缘运行时在响应返回后延长生命周期：仅在存在在途后台下载且运行时提供 waitUntil 时注册
+export function extendBangumiDownloadLifecycle(ctx) {
+    if (ctx && typeof ctx.waitUntil === 'function' && currentBackgroundDownload) {
+        ctx.waitUntil(currentBackgroundDownload);
+    }
+}
+
+// 发起后台静默下载并记录在途 Promise：下载完成时复位状态，供 getBackgroundDownload 暴露给边缘层
+function startDownload(cachePath) {
+    isDownloading = true;
+    downloadLockTime = Date.now();
+    currentBackgroundDownload = downloadAndCache(cachePath).finally(() => {
+        isDownloading = false;
+        currentBackgroundDownload = null;
+    });
+    return currentBackgroundDownload;
+}
+
 /**
  * 初始化 Bangumi Data 数据源
  * 包含内存与磁盘双端缓存的生命周期校验，并在环境允许时持久化缓存数据
@@ -201,7 +239,7 @@ async function selectBestDataSource() {
  * @param {boolean} isDataDependentRequest - 当前是否为强依赖数据的核心接口请求
  * @returns {Promise<void>}
  */
-export async function initBangumiData(deployPlatform, isDataDependentRequest = false, ctx = null) {
+export async function initBangumiData(deployPlatform, isDataDependentRequest = false) {
     if (!globals.useBangumiData) return;
 
     let cachePath = null;
@@ -237,9 +275,7 @@ export async function initBangumiData(deployPlatform, isDataDependentRequest = f
         // 当内存过期或配置强制更新时，仅在核心请求触发后台静默更新
         if (isDataDependentRequest && !isDownloading) {
             log("info", `[system] [Bangumi-Data] 内存数据${cacheDays === 0 ? '强制更新' : '已过期'}，保留老数据服务本次请求，启动后台静默更新...`);
-            isDownloading = true;
-            downloadLockTime = Date.now();
-            downloadAndCache(cachePath).finally(() => { isDownloading = false; });
+            startDownload(cachePath);
         }
         return;
     }
@@ -274,9 +310,7 @@ export async function initBangumiData(deployPlatform, isDataDependentRequest = f
             if (cacheDays === 0 || (Date.now() - stats.mtimeMs >= expireMs)) {
                 if (isDataDependentRequest && !isDownloading) {
                     log("info", `[system] [Bangumi-Data] 磁盘数据${cacheDays === 0 ? '强制更新' : '已过期'}，保留老数据服务本次请求，启动后台静默更新...`);
-                    isDownloading = true;
-                    downloadLockTime = Date.now();
-                    downloadAndCache(cachePath).finally(() => { isDownloading = false; });
+                    startDownload(cachePath);
                 }
             }
             return;
@@ -289,19 +323,13 @@ export async function initBangumiData(deployPlatform, isDataDependentRequest = f
     // 内存与磁盘均无有效数据时的获取逻辑
     if (!isDownloading) {
         log("info", `[system] [Bangumi-Data] 未命中任何有效缓存，正在获取基础数据...`);
-        isDownloading = true;
-        downloadLockTime = Date.now();
 
-        const downloadPromise = downloadAndCache(cachePath).finally(() => { isDownloading = false; });
+        const downloadPromise = startDownload(cachePath);
 
         if (isDataDependentRequest) {
             await downloadPromise; 
         } else {
             log("info", `[system] [Bangumi-Data] 当前非核心请求，数据获取转入后台异步执行`);
-            if (ctx && typeof ctx.waitUntil === 'function') {
-                log("info", `[system] [Bangumi-Data] 调用 ctx.waitUntil 延长 Serverless 生命周期`);
-                ctx.waitUntil(downloadPromise);
-            }
         }
     } else if (isDataDependentRequest) {
         log("info", `[system] [Bangumi-Data] 正在等待基础数据下载完成...`);
@@ -503,6 +531,7 @@ async function downloadAndCache(cachePath) {
  * @returns {Array<Object>} 匹配的动漫条目数组
  */
 export async function searchBangumiData(keyword, siteKeys) {
+    await ensureBangumiDataReady();
     if (!memoryCache || !memoryCache.items) return [];
 
     let searchPromise = queryCache.get(keyword);
diff --git a/danmu_api/utils/tmdb-util.js b/danmu_api/utils/tmdb-util.js
index 159c2e414..20e0063ce 100644
--- a/danmu_api/utils/tmdb-util.js
+++ b/danmu_api/utils/tmdb-util.js
@@ -593,7 +593,7 @@ export async function getTMDBChineseTitle(title, season = null, episode = null)
 // 优先尝试本地 Bangumi Data 转换
   if (globals.useBangumiData) {
     const cleanTitle = cleanSearchQuery(title);
-    const localMatches = searchBangumiData(cleanTitle, ['tmdb', 'bangumi', 'anidb']);
+    const localMatches = await searchBangumiData(cleanTitle, ['tmdb', 'bangumi', 'anidb']);
     if (localMatches && localMatches.length > 0) {
       const m = localMatches[0];
       // 找一个不全是外文的翻译作为中文名
diff --git a/danmu_api/worker.js b/danmu_api/worker.js
index 91c64d325..c10a31f7d 100644
--- a/danmu_api/worker.js
+++ b/danmu_api/worker.js
@@ -5,13 +5,13 @@ import { getFavoriteCachesFromRedis, getRedisCaches, judgeRedisValid } from "./u
 import { cleanupExpiredIPs, findUrlById, getCommentCache, getLocalCaches, judgeLocalCacheValid } from "./utils/cache-util.js";
 import { formatDanmuResponse } from "./utils/danmu-util.js";
 import AIClient from './utils/ai-util.js';
-import { initBangumiData } from "./utils/bangumi-data-util.js";
 import { getBangumi, getComment, getCommentByUrl, getSegmentComment, matchAnime, searchAnime, searchEpisodes } from "./apis/dandan-api.js";
 import { handleFavoriteAdd, handleFavoriteList, handleFavoriteRefresh, handleFavoriteRemove, handleFavoriteSchedule } from "./apis/favorite-api.js";
 import { getFongmiDanmaku } from "./apis/clients/fongmi-api.js";
 import { handleConfig, handleUI, handleLogs, handleClearLogs, handleDeploy, handleClearCache, handleReqRecords, handleCacheAnimes } from "./apis/system-api.js";
 import { handleForwardTrace } from "./apis/forward-trace-api.js";
 import { handleSetEnv, handleAddEnv, handleDelEnv, handleAiVerify } from "./apis/env-api.js";
+import { extendBangumiDownloadLifecycle } from "./utils/bangumi-data-util.js";
 import { Segment } from "./models/dandan-model.js"
 import {
     handleCookieStatus,
@@ -23,7 +23,7 @@ import {
 
 let globals;
 
-async function handleRequest(req, env, deployPlatform, clientIp, ctx) {
+async function handleRequest(req, env, deployPlatform, clientIp) {
   // 加载全局变量和环境变量配置
   globals = Globals.init(env);
 
@@ -31,13 +31,6 @@ async function handleRequest(req, env, deployPlatform, clientIp, ctx) {
   let path = url.pathname;
   const method = req.method;
 
-  //  Bangumi Data 辅助函数，用于判断数据更新
-  const isDataDependentRequest = path.includes('/search') || path.includes('/match') || path.includes('/danmaku');
-
-  if (globals.useBangumiData) {
-      await initBangumiData(deployPlatform, isDataDependentRequest, ctx);
-  }
-
   globals.deployPlatform = deployPlatform;
   if (deployPlatform === "node") {
     await judgeLocalCacheValid(path, deployPlatform);
@@ -754,7 +747,10 @@ export default {
     // 获取客户端的真实 IP
     const clientIp = request.headers.get('cf-connecting-ip') || request.headers.get('x-forwarded-for') || 'unknown';
 
-    return handleRequest(request, env, detectDeployPlatform(env), clientIp, ctx);
+    const response = await handleRequest(request, env, detectDeployPlatform(env), clientIp);
+    // 边缘运行时在响应返回后延长生命周期，容纳可能在途的 Bangumi Data 后台静默下载
+    extendBangumiDownloadLifecycle(ctx);
+    return response;
   },
 };
 
diff --git a/danmu_api/worker.test.js b/danmu_api/worker.test.js
index 3b4f142c7..575463a12 100644
--- a/danmu_api/worker.test.js
+++ b/danmu_api/worker.test.js
@@ -2850,6 +2850,101 @@ test('worker.js API endpoints', async (t) => {
 //   });
 // });
 
+// // 测试 Bangumi Data 数据下载时机（ensureBangumiDataReady）、配置变更触发下载（syncBangumiDataLifecycleOnConfigChange）
+// // 以及 getTMDBChineseTitle 漏写 await 的修复；与 envs RAW_ENV_KEYS 测试同为按需启用的内部测试
+// import { globals } from './configs/globals.js';
+// import { ensureBangumiDataReady, syncBangumiDataLifecycleOnConfigChange, initBangumiData, clearBangumiDataCache } from './utils/bangumi-data-util.js';
+// import fs from 'node:fs';
+// import path from 'node:path';
+//
+// test('bangumi-data 数据下载时机与配置变更触发下载', async (t) => {
+//   const CACHE_DIR = path.join(process.cwd(), '.cache');
+//   const CACHE_FILE = path.join(CACHE_DIR, 'bangumi-data-cache.json');
+//   const FAKE_ITEM = {
+//     title: 'FrobeniusTestAnime',
+//     titleTranslate: { 'zh-Hans': ['弗罗贝尼乌斯测试动画', 'FrobeniusTestAnime'] },
+//     sites: [{ site: 'tmdb', id: '999999' }],
+//     _flatText: 'frobeniustestanime'
+//   };
+//   const reset = () => {
+//     globals.useBangumiData = false;
+//     clearBangumiDataCache(false);
+//     if (fs.existsSync(CACHE_FILE)) fs.writeFileSync(CACHE_FILE, '', 'utf-8');
+//   };
+//
+//   await t.test('ensureBangumiDataReady 开关关闭时直接返回且不触发下载', async () => {
+//     reset();
+//     globals.useBangumiData = false;
+//     await ensureBangumiDataReady('node');
+//     assert.ok(true);
+//   });
+//
+//   await t.test('syncBangumiDataLifecycleOnConfigChange 开关关闭释放缓存、开启安全触发', async () => {
+//     reset();
+//     globals.useBangumiData = false;
+//     assert.doesNotThrow(() => syncBangumiDataLifecycleOnConfigChange('node'));
+//     fs.mkdirSync(CACHE_DIR, { recursive: true });
+//     fs.writeFileSync(CACHE_FILE, JSON.stringify({ items: [FAKE_ITEM] }), 'utf-8');
+//     globals.useBangumiData = true;
+//     assert.doesNotThrow(() => syncBangumiDataLifecycleOnConfigChange('node'));
+//   });
+//
+//   await t.test('getTMDBChineseTitle 经 await 命中本地中文名（修复漏写 await）', async () => {
+//     reset();
+//     globals.useBangumiData = true;
+//     const originalContent = fs.existsSync(CACHE_FILE) ? fs.readFileSync(CACHE_FILE, 'utf-8') : null;
+//     fs.mkdirSync(CACHE_DIR, { recursive: true });
+//     fs.writeFileSync(CACHE_FILE, JSON.stringify({ items: [FAKE_ITEM] }), 'utf-8');
+//     try {
+//       await initBangumiData('node', true);
+//       const result = await getTMDBChineseTitle('FrobeniusTestAnime');
+//       assert.equal(result, '弗罗贝尼乌斯测试动画');
+//     } finally {
+//       clearBangumiDataCache(false);
+//       if (originalContent !== null) fs.writeFileSync(CACHE_FILE, originalContent, 'utf-8');
+//       else fs.writeFileSync(CACHE_FILE, '', 'utf-8');
+//     }
+//   });
+// });
+
+// // 测试 Bangumi Data 在途下载暴露与边缘生命周期延长（getBackgroundDownload / extendBangumiDownloadLifecycle）
+// // 与上方 bangumi 测试同为按需启用的内部测试；沙箱有网时真实下载以验证在途暴露、注册与清理
+// import { globals } from './configs/globals.js';
+// import { initBangumiData, getBackgroundDownload, extendBangumiDownloadLifecycle } from './utils/bangumi-data-util.js';
+// import assert from 'node:assert';
+// import fs from 'node:fs';
+// import path from 'node:path';
+//
+// test('bangumi-data 在途下载暴露与边缘生命周期延长', async (t) => {
+//   const CACHE_DIR = path.join(process.cwd(), '.cache');
+//   const CACHE_FILE = path.join(CACHE_DIR, 'bangumi-data-cache.json');
+//   const hadCache = fs.existsSync(CACHE_DIR);
+//
+//   // 空闲时无在途下载
+//   assert.strictEqual(getBackgroundDownload(), null);
+//
+//   await t.test('extendBangumiDownloadLifecycle 在无在途或 ctx 缺失时不注册', async () => {
+//     const calls = [];
+//     extendBangumiDownloadLifecycle(null);
+//     extendBangumiDownloadLifecycle({ waitUntil: (p) => calls.push(p) });
+//     assert.strictEqual(calls.length, 0);
+//   });
+//
+//   await t.test('在途下载被暴露、响应后由边缘 waitUntil 注册、完成后清理', async () => {
+//     globals.useBangumiData = true;
+//     // 启动真实下载（无 .cache 时走内存路径，不落地文件；有 .cache 则后台刷新），不在途时立即返回
+//     const initPromise = initBangumiData('node', true);
+//     const bg = getBackgroundDownload();
+//     assert.ok(bg && typeof bg.then === 'function', '下载在途时应暴露 Promise');
+//     const ctx = { waitUntil: (p) => { ctx.registered = p; } };
+//     extendBangumiDownloadLifecycle(ctx);
+//     assert.strictEqual(ctx.registered, bg, '边缘 waitUntil 应注册在途 Promise');
+//     await bg; // 等待下载完成（兼容阻塞与后台两种路径）
+//     assert.strictEqual(getBackgroundDownload(), null, '下载完成后应清理在途状态');
+//     globals.useBangumiData = false;
+//     if (!hadCache && fs.existsSync(CACHE_FILE)) fs.writeFileSync(CACHE_FILE, '', 'utf-8');
+//     await initPromise.catch(() => {});
+//   });
 // // 测试自定义文本类变量绕过 dotenv 注释截断（保留 # 等字符），对应 envs.js RAW_ENV_KEYS 修复
 // import { Envs } from './configs/envs.js';
 //