diff --git a/packages/plugins/plugin-lib/src/oss/api.ts b/packages/plugins/plugin-lib/src/oss/api.ts
index b311873c..d4458424 100644
--- a/packages/plugins/plugin-lib/src/oss/api.ts
+++ b/packages/plugins/plugin-lib/src/oss/api.ts
@@ -9,7 +9,6 @@ export type OssClientRemoveByOpts = {
 };
 
 export type OssFileItem = {
-  name: string;
   path: string;
   size: number;
   //毫秒时间戳
diff --git a/packages/plugins/plugin-lib/src/oss/factory.ts b/packages/plugins/plugin-lib/src/oss/factory.ts
index 33d78b1d..9bd128ed 100644
--- a/packages/plugins/plugin-lib/src/oss/factory.ts
+++ b/packages/plugins/plugin-lib/src/oss/factory.ts
@@ -27,7 +27,7 @@ export class OssClientFactory {
       throw new Error(`暂不支持此文件上传方式: ${type}`);
     }
   }
-  async createOssClientByType(type: string, opts: { rootDir: string; access: any; ctx: OssClientContext }) {
+  async createOssClientByType(type: string, opts: { rootDir?: string; access: any; ctx: OssClientContext }) {
     const cls = await this.getClassByType(type);
     if (cls) {
       // @ts-ignore
diff --git a/packages/plugins/plugin-lib/src/oss/impls/tencentcos.ts b/packages/plugins/plugin-lib/src/oss/impls/tencentcos.ts
index 5dad8de7..20fe9be2 100644
--- a/packages/plugins/plugin-lib/src/oss/impls/tencentcos.ts
+++ b/packages/plugins/plugin-lib/src/oss/impls/tencentcos.ts
@@ -1,37 +1,49 @@
+import dayjs from "dayjs";
 import { TencentAccess, TencentCosAccess, TencentCosClient } from "../../tencent/index.js";
 import { BaseOssClient, OssClientRemoveByOpts, OssFileItem } from "../api.js";
 
 export default class TencentOssClientImpl extends BaseOssClient<TencentCosAccess> {
-  download(fileName: string, savePath: string): Promise<void> {
-    throw new Error("Method not implemented.");
+  client: TencentCosClient;
+
+  join(...strs: string[]) {
+    const str = super.join(...strs);
+    if (str.startsWith("/")) {
+      return str.substring(1);
+    }
+    return str;
   }
-  removeBy(removeByOpts: OssClientRemoveByOpts): Promise<void> {
-    throw new Error("Method not implemented.");
-  }
-  listDir(dir: string): Promise<OssFileItem[]> {
-    throw new Error("Method not implemented.");
-  }
-  async upload(filePath: string, fileContent: Buffer) {
+  async init() {
     const access = await this.ctx.accessService.getById<TencentAccess>(this.access.accessId);
-    const client = new TencentCosClient({
+    this.client = new TencentCosClient({
       access: access,
       logger: this.logger,
       region: this.access.region,
       bucket: this.access.bucket,
     });
-    const key = this.rootDir + filePath;
-    await client.uploadFile(key, fileContent);
+  }
+  async download(filePath: string, savePath: string): Promise<void> {
+    const key = this.join(this.rootDir, filePath);
+    await this.client.downloadFile(key, savePath);
+  }
+
+  async listDir(dir: string): Promise<OssFileItem[]> {
+    const dirKey = this.join(this.rootDir, dir) + "/";
+    const res: any[] = await this.client.listDir(dirKey);
+    return res.map(item => {
+      return {
+        path: item.Key,
+        size: item.Size,
+        lastModified: dayjs(item.LastModified).valueOf(),
+      };
+    });
+  }
+  async upload(filePath: string, fileContent: Buffer) {
+    const key = this.join(this.rootDir, filePath);
+    await this.client.uploadFile(key, fileContent);
   }
 
   async remove(filePath: string) {
-    const access = await this.ctx.accessService.getById<TencentAccess>(this.access.accessId);
-    const client = new TencentCosClient({
-      access: access,
-      logger: this.logger,
-      region: this.access.region,
-      bucket: this.access.bucket,
-    });
-    const key = this.rootDir + filePath;
-    await client.removeFile(key);
+    const key = this.join(this.rootDir, filePath);
+    await this.client.removeFile(key);
   }
 }
diff --git a/packages/plugins/plugin-lib/src/tencent/lib/cos-client.ts b/packages/plugins/plugin-lib/src/tencent/lib/cos-client.ts
index 91bf0b51..25e576b6 100644
--- a/packages/plugins/plugin-lib/src/tencent/lib/cos-client.ts
+++ b/packages/plugins/plugin-lib/src/tencent/lib/cos-client.ts
@@ -1,5 +1,6 @@
 import { TencentAccess } from "../access.js";
 import { ILogger } from "@certd/basic";
+import fs from "fs";
 
 export class TencentCosClient {
   access: TencentAccess;
@@ -66,4 +67,47 @@ export class TencentCosClient {
       );
     });
   }
+
+  async downloadFile(key: string, savePath: string) {
+    const cos = await this.getCosClient();
+    const writeStream = fs.createWriteStream(savePath);
+    return new Promise((resolve, reject) => {
+      cos.getObject(
+        {
+          Bucket: this.bucket,
+          Region: this.region,
+          Key: key,
+          Output: writeStream,
+        },
+        function (err, data) {
+          if (err) {
+            reject(err);
+            return;
+          }
+          resolve(data);
+        }
+      );
+    });
+  }
+
+  async listDir(dirKey: string) {
+    const cos = await this.getCosClient();
+    return new Promise((resolve, reject) => {
+      cos.getBucket(
+        {
+          Bucket: this.bucket,
+          Region: this.region,
+          Prefix: dirKey,
+          MaxKeys: 1000,
+        },
+        function (err, data) {
+          if (err) {
+            reject(err);
+            return;
+          }
+          resolve(data.Contents);
+        }
+      );
+    });
+  }
 }