diff --git a/es/utils/cos/index.backend.js b/es/utils/cos/index.backend.js
index b4fa2fde5..bcf322f6b 100644
--- a/es/utils/cos/index.backend.js
+++ b/es/utils/cos/index.backend.js
@@ -3,9 +3,9 @@ import CTYunBackend from './ctyun.backend';
 import WechatBackend from './wechat.backend';
 import QiniuBackend from './qiniu.backend';
 const CosBackendDict = {
-    [CTYunBackend.name]: new CTYunBackend(),
-    [WechatBackend.name]: new WechatBackend(),
-    [QiniuBackend.name]: new QiniuBackend(),
+    'ctyun': new CTYunBackend(),
+    'wechat': new WechatBackend(),
+    'qiniu': new QiniuBackend(),
 };
 /**
  * 注入一个其它OSS上实现的uploader类
diff --git a/lib/utils/cos/index.backend.js b/lib/utils/cos/index.backend.js
index d79cca680..9fa1b2fb3 100644
--- a/lib/utils/cos/index.backend.js
+++ b/lib/utils/cos/index.backend.js
@@ -7,9 +7,9 @@ const ctyun_backend_1 = tslib_1.__importDefault(require("./ctyun.backend"));
 const wechat_backend_1 = tslib_1.__importDefault(require("./wechat.backend"));
 const qiniu_backend_1 = tslib_1.__importDefault(require("./qiniu.backend"));
 const CosBackendDict = {
-    [ctyun_backend_1.default.name]: new ctyun_backend_1.default(),
-    [wechat_backend_1.default.name]: new wechat_backend_1.default(),
-    [qiniu_backend_1.default.name]: new qiniu_backend_1.default(),
+    'ctyun': new ctyun_backend_1.default(),
+    'wechat': new wechat_backend_1.default(),
+    'qiniu': new qiniu_backend_1.default(),
 };
 /**
  * 注入一个其它OSS上实现的uploader类
diff --git a/src/utils/cos/index.backend.ts b/src/utils/cos/index.backend.ts
index 4cc5ecb7f..0049ecee6 100644
--- a/src/utils/cos/index.backend.ts
+++ b/src/utils/cos/index.backend.ts
@@ -8,9 +8,9 @@ import WechatBackend from './wechat.backend';
 import QiniuBackend from './qiniu.backend';
 
 const CosBackendDict: Record<string, CosBackend<EntityDict>> = {
-    [CTYunBackend.name]: new CTYunBackend(),
-    [WechatBackend.name]: new WechatBackend(),
-    [QiniuBackend.name]: new QiniuBackend(),
+    'ctyun': new CTYunBackend(),
+    'wechat': new WechatBackend(),
+    'qiniu': new QiniuBackend(),
 };
 
 /**