diff --git a/docs/qqbot-bangdream-tsugu-global-refactor-plan.md b/docs/qqbot-bangdream-tsugu-global-refactor-plan.md
index b8d7bda..4d63ec5 100644
--- a/docs/qqbot-bangdream-tsugu-global-refactor-plan.md
+++ b/docs/qqbot-bangdream-tsugu-global-refactor-plan.md
@@ -312,6 +312,7 @@ export interface TsuguHook {
 - 已新增 `models/cutoff-event-top-repository.ts` 和 `render-blocks/player-ranking-resource-repository.ts`，把前十榜 eventtop 数据请求与排名徽章素材路径从 `bestdoriUrl + callAPIAndCacheResponse/downloadFileCache` 收口到 provider-backed repository；相关 spec 覆盖 eventtop query path、排名徽章路径和 provider 调用，本地 `/ycx 10 100 cn` 图片 smoke 输出非空。
 - 已新增 `models/degree-resource-repository.ts`，把 `Degree` 的称号缩略图、称号框、称号图标、动态称号脚本和纹理素材路径从 `bestdoriUrl + downloadFile/downloadFileCache` 收口到 provider-backed repository；`degree-resource-repository.spec.ts` 覆盖旧/新缩略图 fallback、动态称号旧纹理白名单和 provider 调用，本地 `/ycx 10 100 cn` 图片 smoke 输出非空。
 - 已新增 `render-blocks/deck-rank-resource-repository.ts`，把玩家详情“乐队编成等级”Rank 图片从 `list-band-detail.ts` 的本地路径和 Bestdori URL 直拼收口到 repository，渲染层只负责 `Buffer -> Image`；`deck-rank-resource-repository.spec.ts` 覆盖本地素材优先、远端 `/res/icon/*.png` 兜底和 provider 调用，本地 `/查玩家 26591455 jp` 图片 smoke 输出非空。
+- `models/event-data-repository.ts` 已改为 provider-injected repository，并为活动背景和 topscreen trim 增加路径工厂；活动详情背景现在跟随 `displayedServerList` 选服，不再无条件按全局默认服取底图，避免 `/查活动 ... jp` 这类指定服务器查询出现横幅和背景不一致。
 - 固化：Windows 下不要用反斜杠测试路径直接调用 Jest pattern，容易出现 `Pattern ... - 0 matches`；指定文件测试统一使用 `pnpm exec jest --runInBand --runTestsByPath test/qqbot/plugins/bangDream/tsugu/<file>.spec.ts ...`，路径用正斜杠。
 
 ### Phase 4：搜索 specification 和 matcher
diff --git a/src/qqbot/plugins/bangDream/tsugu/command-renderers/event-detail.ts b/src/qqbot/plugins/bangDream/tsugu/command-renderers/event-detail.ts
index fec497b..a2c72f4 100644
--- a/src/qqbot/plugins/bangDream/tsugu/command-renderers/event-detail.ts
+++ b/src/qqbot/plugins/bangDream/tsugu/command-renderers/event-detail.ts
@@ -459,7 +459,9 @@ export async function drawEventDetail(
     all.push(gachaImageList[i]);
   }
 
-  const BGimage = useEasyBG ? undefined : await event.getEventBGImage();
+  const BGimage = useEasyBG
+    ? undefined
+    : await event.getEventBGImage(displayedServerList);
 
   return await createOutputFinalImages({
     useEasyBG,
diff --git a/src/qqbot/plugins/bangDream/tsugu/models/event-data-repository.ts b/src/qqbot/plugins/bangDream/tsugu/models/event-data-repository.ts
index 2d1bf32..1255c61 100644
--- a/src/qqbot/plugins/bangDream/tsugu/models/event-data-repository.ts
+++ b/src/qqbot/plugins/bangDream/tsugu/models/event-data-repository.ts
@@ -1,6 +1,5 @@
 import { Canvas, Image, loadImage } from 'skia-canvas';
 import { bangDreamBestdoriProvider } from '@/qqbot/plugins/bangDream/tsugu/data-clients/bestdori-provider';
-import { bangDreamMainDataRepository } from '@/qqbot/plugins/bangDream/tsugu/models/main-data-repository';
 import {
   getServerByPriority,
   Server,
@@ -35,7 +34,11 @@ type RewardWithId = {
   rewardType: string;
 };
 
-class EventDataRepository {
+export class EventDataRepository {
+  constructor(
+    private readonly provider = bangDreamBestdoriProvider,
+  ) {}
+
   /**
    * 获取活动远端详情数据。
    *
@@ -44,12 +47,40 @@ class EventDataRepository {
    */
   async getDetail(eventId: number, update = true): Promise<Record<string, any>> {
     const cacheTime = update ? 0 : 1 / 0;
-    return await bangDreamBestdoriProvider.getJson<Record<string, any>>(
+    return await this.provider.getJson<Record<string, any>>(
       `/api/events/${eventId}.json`,
       { cacheTime },
     );
   }
 
+  /**
+   * 获取活动背景资源路径。
+   *
+   * @param event - 活动资源上下文。
+   * @param displayedServerList - 展示服务器优先级。
+   */
+  getBackgroundImagePath(
+    event: EventAssetContext,
+    displayedServerList: Server[] = globalDefaultServer,
+  ): string {
+    const server = getServerByPriority(event.startAt, displayedServerList);
+    return `/assets/${Server[server]}/event/${event.assetBundleName}/topscreen_rip/bg_eventtop.png`;
+  }
+
+  /**
+   * 获取活动主界面裁切图资源路径。
+   *
+   * @param event - 活动资源上下文。
+   * @param displayedServerList - 展示服务器优先级。
+   */
+  getTopscreenTrimImagePath(
+    event: EventAssetContext,
+    displayedServerList: Server[] = globalDefaultServer,
+  ): string {
+    const server = getServerByPriority(event.startAt, displayedServerList);
+    return `/assets/${Server[server]}/event/${event.assetBundleName}/topscreen_rip/trim_eventtop.png`;
+  }
+
   /**
    * 获取活动横幅图，优先活动资源，失败时回退 homebanner。
    *
@@ -62,13 +93,13 @@ class EventDataRepository {
   ): Promise<Image> {
     const server = getServerByPriority(event.startAt, displayedServerList);
     try {
-      const bannerImageBuffer = await bangDreamBestdoriProvider.getAsset(
+      const bannerImageBuffer = await this.provider.getAsset(
         `/assets/${Server[server]}/event/${event.assetBundleName}/images_rip/banner.png`,
         { ignoreError: false },
       );
       return await loadImage(bannerImageBuffer);
     } catch {
-      const bannerImageBuffer = await bangDreamBestdoriProvider.getAsset(
+      const bannerImageBuffer = await this.provider.getAsset(
         `/assets/jp/homebanner_rip/${event.bannerAssetBundleName}.png`,
       );
       return await loadImage(bannerImageBuffer);
@@ -79,15 +110,21 @@ class EventDataRepository {
    * 获取活动背景图。
    *
    * @param event - 活动资源上下文。
+   * @param displayedServerList - 展示服务器优先级。
    */
-  async getBackgroundImage(event: EventAssetContext): Promise<Image | Canvas> {
-    const server = getServerByPriority(event.startAt);
-    const bgImageBuffer = await bangDreamBestdoriProvider.getAsset(
-      `/assets/${Server[server]}/event/${event.assetBundleName}/topscreen_rip/bg_eventtop.png`,
+  async getBackgroundImage(
+    event: EventAssetContext,
+    displayedServerList: Server[] = globalDefaultServer,
+  ): Promise<Image | Canvas> {
+    const bgImageBuffer = await this.provider.getAsset(
+      this.getBackgroundImagePath(event, displayedServerList),
     );
     const backgroundImage = await loadImage(bgImageBuffer);
     try {
-      const trimImage = await this.getTopscreenTrimImage(event);
+      const trimImage = await this.getTopscreenTrimImage(
+        event,
+        displayedServerList,
+      );
       return this.mergeTopscreenImages(backgroundImage, trimImage);
     } catch {
       return backgroundImage;
@@ -110,7 +147,7 @@ class EventDataRepository {
     let ruleNumber = 1;
     while (true) {
       try {
-        const slideImageBuffer = await bangDreamBestdoriProvider.getAsset(
+        const slideImageBuffer = await this.provider.getAsset(
           `${basePath}rule${ruleNumber}.png`,
           { ignoreError: false },
         );
@@ -127,11 +164,14 @@ class EventDataRepository {
    * 获取活动主界面裁切图。
    *
    * @param event - 活动资源上下文。
+   * @param displayedServerList - 展示服务器优先级。
    */
-  async getTopscreenTrimImage(event: EventAssetContext): Promise<Image> {
-    const server = getServerByPriority(event.startAt);
-    const topscreenTrimImageBuffer = await bangDreamBestdoriProvider.getAsset(
-      `/assets/${Server[server]}/event/${event.assetBundleName}/topscreen_rip/trim_eventtop.png`,
+  async getTopscreenTrimImage(
+    event: EventAssetContext,
+    displayedServerList: Server[] = globalDefaultServer,
+  ): Promise<Image> {
+    const topscreenTrimImageBuffer = await this.provider.getAsset(
+      this.getTopscreenTrimImagePath(event, displayedServerList),
     );
     return await loadImage(topscreenTrimImageBuffer);
   }
@@ -172,7 +212,7 @@ class EventDataRepository {
     tempServer: Server,
   ): Promise<Image> {
     const server = getServerByPriority(event.startAt, [tempServer]);
-    const logoImageBuffer = await bangDreamBestdoriProvider.getAsset(
+    const logoImageBuffer = await this.provider.getAsset(
       `/assets/${Server[server]}/event/${event.assetBundleName}/images_rip/logo.png`,
     );
     return await loadImage(logoImageBuffer);
@@ -188,7 +228,7 @@ class EventDataRepository {
     event: EventRewardContext,
     server: Server,
   ): Promise<Image | undefined> {
-    const allStamps = await bangDreamBestdoriProvider.getJson<
+    const allStamps = await this.provider.getJson<
       Record<string, any>
     >('/api/stamps/all.2.json');
     const rewardId = this.pickRewardId(event.pointRewards, 'stamp');
@@ -202,7 +242,7 @@ class EventDataRepository {
 
     const serverName = this.pickReleasedServerName(event.startAt, server, 'jp');
     try {
-      const stampBuffer = await bangDreamBestdoriProvider.getAsset(
+      const stampBuffer = await this.provider.getAsset(
         `/assets/${serverName}/stamp/01_rip/${stampAssetName}.png`,
         { ignoreError: false },
       );
@@ -227,6 +267,9 @@ class EventDataRepository {
     const rewardId = this.pickRewardId(event.rankingRewards, 'deco_pins');
     if (rewardId === undefined) return undefined;
 
+    const { bangDreamMainDataRepository } = await import(
+      '@/qqbot/plugins/bangDream/tsugu/models/main-data-repository'
+    );
     const allDeco = bangDreamMainDataRepository.getCollection<
       Record<string, any>
     >('deco');
@@ -235,7 +278,7 @@ class EventDataRepository {
 
     const serverName = this.pickReleasedServerName(event.startAt, server, 'cn');
     try {
-      const decoBuffer = await bangDreamBestdoriProvider.getAsset(
+      const decoBuffer = await this.provider.getAsset(
         `/assets/${serverName}/deco/pins_rip/${decoAssetName}.png`,
         { ignoreError: false },
       );
diff --git a/src/qqbot/plugins/bangDream/tsugu/models/event.ts b/src/qqbot/plugins/bangDream/tsugu/models/event.ts
index 3defd1b..7474723 100644
--- a/src/qqbot/plugins/bangDream/tsugu/models/event.ts
+++ b/src/qqbot/plugins/bangDream/tsugu/models/event.ts
@@ -214,8 +214,13 @@ export class Event {
    *
    * @returns 异步处理结果。
    */
-  async getEventBGImage(): Promise<Image | Canvas> {
-    return await eventDataRepository.getBackgroundImage(this);
+  async getEventBGImage(
+    displayedServerList: Server[] = globalDefaultServer,
+  ): Promise<Image | Canvas> {
+    return await eventDataRepository.getBackgroundImage(
+      this,
+      displayedServerList,
+    );
   }
   //活动规则轮播图
   /**
@@ -233,8 +238,13 @@ export class Event {
    *
    * @returns 异步处理结果。
    */
-  async getEventTopscreenTrimImage(): Promise<Image> {
-    return await eventDataRepository.getTopscreenTrimImage(this);
+  async getEventTopscreenTrimImage(
+    displayedServerList: Server[] = globalDefaultServer,
+  ): Promise<Image> {
+    return await eventDataRepository.getTopscreenTrimImage(
+      this,
+      displayedServerList,
+    );
   }
   /**
    * 在 Event 模型中获取活动Logo图片。
diff --git a/test/qqbot/plugins/bangDream/tsugu/event-data-repository.spec.ts b/test/qqbot/plugins/bangDream/tsugu/event-data-repository.spec.ts
new file mode 100644
index 0000000..27f7e18
--- /dev/null
+++ b/test/qqbot/plugins/bangDream/tsugu/event-data-repository.spec.ts
@@ -0,0 +1,61 @@
+import type { BangDreamDataProvider } from '@/qqbot/plugins/bangDream/tsugu/data-clients/data-provider';
+import {
+  EventDataRepository,
+  type EventAssetContext,
+} from '@/qqbot/plugins/bangDream/tsugu/models/event-data-repository';
+import { Server } from '@/qqbot/plugins/bangDream/tsugu/models/server';
+
+function createProviderMock(): jest.Mocked<BangDreamDataProvider> {
+  return {
+    getAsset: jest.fn(),
+    getJson: jest.fn(),
+    getTracker: jest.fn(),
+    name: 'MockBestdori',
+    resolveUrl: jest.fn((pathOrUrl) => `https://bestdori.example${pathOrUrl}`),
+  };
+}
+
+function createEventAssetContext(): EventAssetContext {
+  return {
+    assetBundleName: 'event_test',
+    bannerAssetBundleName: 'homebanner_test',
+    startAt: [1, null, null, 2, null],
+  };
+}
+
+describe('BangDream event data repository', () => {
+  it('builds event background paths from the requested server priority', () => {
+    const repository = new EventDataRepository(createProviderMock());
+    const event = createEventAssetContext();
+
+    expect(repository.getBackgroundImagePath(event, [Server.jp])).toBe(
+      '/assets/jp/event/event_test/topscreen_rip/bg_eventtop.png',
+    );
+    expect(repository.getTopscreenTrimImagePath(event, [Server.jp])).toBe(
+      '/assets/jp/event/event_test/topscreen_rip/trim_eventtop.png',
+    );
+  });
+
+  it('falls back to released servers when requested server has no event assets', () => {
+    const repository = new EventDataRepository(createProviderMock());
+    const event = createEventAssetContext();
+
+    expect(repository.getBackgroundImagePath(event, [Server.en])).toBe(
+      '/assets/cn/event/event_test/topscreen_rip/bg_eventtop.png',
+    );
+  });
+
+  it('routes event detail requests through the provider cache policy', async () => {
+    const provider = createProviderMock();
+    provider.getJson.mockResolvedValue({ eventName: ['test'] });
+    const repository = new EventDataRepository(provider);
+
+    await expect(repository.getDetail(50, false)).resolves.toEqual({
+      eventName: ['test'],
+    });
+
+    expect(provider.getJson).toHaveBeenCalledWith('/api/events/50.json', {
+      cacheTime: Infinity,
+    });
+  });
+});