diff --git a/packages/napcat-onebot/action/go-cqhttp/UploadGroupFile.ts b/packages/napcat-onebot/action/go-cqhttp/UploadGroupFile.ts
index d6bfef0a..d9d09d5c 100644
--- a/packages/napcat-onebot/action/go-cqhttp/UploadGroupFile.ts
+++ b/packages/napcat-onebot/action/go-cqhttp/UploadGroupFile.ts
@@ -41,7 +41,7 @@ export default class GoCQHTTPUploadGroupFile extends OneBotAction<Payload, Uploa
       peer,
       deleteAfterSentFiles: [],
     };
-    const sendFileEle = await this.core.apis.FileApi.createValidSendFileElement(msgContext, downloadResult.path, payload.name, payload.folder ?? payload.folder_id);
+    const sendFileEle = await this.obContext.apis.FileApi.createValidSendFileElement(msgContext, downloadResult.path, payload.name, payload.folder ?? payload.folder_id);
     msgContext.deleteAfterSentFiles.push(downloadResult.path);
     const returnMsg = await this.obContext.apis.MsgApi.sendMsgWithOb11UniqueId(peer, [sendFileEle], msgContext.deleteAfterSentFiles);
 
diff --git a/packages/napcat-onebot/action/go-cqhttp/UploadPrivateFile.ts b/packages/napcat-onebot/action/go-cqhttp/UploadPrivateFile.ts
index 18af2344..af706649 100644
--- a/packages/napcat-onebot/action/go-cqhttp/UploadPrivateFile.ts
+++ b/packages/napcat-onebot/action/go-cqhttp/UploadPrivateFile.ts
@@ -51,7 +51,7 @@ export default class GoCQHTTPUploadPrivateFile extends OneBotAction<Payload, Upl
       }, ContextMode.Private),
       deleteAfterSentFiles: [],
     };
-    const sendFileEle: SendFileElement = await this.core.apis.FileApi.createValidSendFileElement(msgContext, downloadResult.path, payload.name);
+    const sendFileEle: SendFileElement = await this.obContext.apis.FileApi.createValidSendFileElement(msgContext, downloadResult.path, payload.name);
     msgContext.deleteAfterSentFiles.push(downloadResult.path);
     const returnMsg = await this.obContext.apis.MsgApi.sendMsgWithOb11UniqueId(await this.getPeer(payload), [sendFileEle], msgContext.deleteAfterSentFiles);
 
diff --git a/packages/napcat-onebot/api/msg.ts b/packages/napcat-onebot/api/msg.ts
index ae092382..f5564e28 100644
--- a/packages/napcat-onebot/api/msg.ts
+++ b/packages/napcat-onebot/api/msg.ts
@@ -666,7 +666,7 @@ export class OneBotMsgApi {
 
     // File service
     [OB11MessageDataType.image]: async (sendMsg, context) => {
-      return await this.core.apis.FileApi.createValidSendPicElement(
+      return await this.obContext.apis.FileApi.createValidSendPicElement(
         context,
         (await this.handleOb11FileLikeMessage(sendMsg, context)).path,
         sendMsg.data.summary,
@@ -676,7 +676,7 @@ export class OneBotMsgApi {
 
     [OB11MessageDataType.file]: async (sendMsg, context) => {
       const { path, fileName } = await this.handleOb11FileLikeMessage(sendMsg, context);
-      return await this.core.apis.FileApi.createValidSendFileElement(context, path, fileName);
+      return await this.obContext.apis.FileApi.createValidSendFileElement(context, path, fileName);
     },
 
     [OB11MessageDataType.video]: async (sendMsg, context) => {
@@ -691,11 +691,11 @@ export class OneBotMsgApi {
         }
       }
 
-      return await this.core.apis.FileApi.createValidSendVideoElement(context, path, fileName, thumb);
+      return await this.obContext.apis.FileApi.createValidSendVideoElement(context, path, fileName, thumb);
     },
 
     [OB11MessageDataType.voice]: async (sendMsg, context) =>
-      this.core.apis.FileApi.createValidSendPttElement(context,
+      this.obContext.apis.FileApi.createValidSendPttElement(context,
         (await this.handleOb11FileLikeMessage(sendMsg, context)).path),
 
     [OB11MessageDataType.json]: async ({ data: { data } }) => ({
diff --git a/packages/napcat-onebot/index.ts b/packages/napcat-onebot/index.ts
index 99641e10..0a74bfe6 100644
--- a/packages/napcat-onebot/index.ts
+++ b/packages/napcat-onebot/index.ts
@@ -54,6 +54,7 @@ import { IOB11NetworkAdapter } from '@/napcat-onebot/network/adapter';
 import { OB11HttpSSEServerAdapter } from './network/http-server-sse';
 import { OB11PluginMangerAdapter } from './network/plugin-manger';
 import { existsSync } from 'node:fs';
+import { OneBotFileApi } from './api/file';
 
 interface ApiListType {
   GroupApi: OneBotGroupApi;
@@ -61,6 +62,7 @@ interface ApiListType {
   FriendApi: OneBotFriendApi;
   MsgApi: OneBotMsgApi;
   QuickActionApi: OneBotQuickActionApi;
+  FileApi: OneBotFileApi;
 }
 // OneBot实现类
 export class NapCatOneBot11Adapter {
@@ -83,6 +85,7 @@ export class NapCatOneBot11Adapter {
       FriendApi: new OneBotFriendApi(this, core),
       MsgApi: new OneBotMsgApi(this, core),
       QuickActionApi: new OneBotQuickActionApi(this, core),
+      FileApi: new OneBotFileApi(this, core),
     } as const;
     this.actions = createActionMap(this, core);
     this.networkManager = new OB11NetworkManager();