diff --git a/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/CredentialsProviderFactory.java b/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/CredentialsProviderFactory.java
deleted file mode 100644
index ed052c9eb6..0000000000
--- a/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/CredentialsProviderFactory.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package com.aliyuncs.auth;
-
-public class CredentialsProviderFactory {
-    public <T extends AlibabaCloudCredentialsProvider> T createCredentialsProvider(T classInstance) {
-        return classInstance;
-    }
-}
diff --git a/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/ProfileCredentialsProvider.java b/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/ProfileCredentialsProvider.java
index cd6594b756..e89d45b0f1 100644
--- a/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/ProfileCredentialsProvider.java
+++ b/aliyun-java-sdk-core/src/main/java/com/aliyuncs/auth/ProfileCredentialsProvider.java
@@ -45,8 +45,7 @@ public AlibabaCloudCredentials getCredentials() throws ClientException {
         if (clientConfig == null) {
             throw new ClientException("Client is not open in the specified credentials file");
         }
-        CredentialsProviderFactory credentialsProviderFactory = new CredentialsProviderFactory();
-        return createCredential(clientConfig, credentialsProviderFactory);
+        return createCredential(clientConfig);
     }
 
     private Map<String, Map<String, String>> loadIni(Wini ini) {
@@ -65,20 +64,19 @@ private Map<String, Map<String, String>> loadIni(Wini ini) {
         return client;
     }
 
-    private AlibabaCloudCredentials createCredential(Map<String, String> clientConfig,
-                                                     CredentialsProviderFactory factory) throws ClientException {
+    private AlibabaCloudCredentials createCredential(Map<String, String> clientConfig) throws ClientException {
         String configType = clientConfig.get(AuthConstant.INI_TYPE);
         if (StringUtils.isEmpty(configType)) {
             throw new ClientException("The configured client type is empty");
         }
         if (AuthConstant.INI_TYPE_ARN.equals(configType)) {
-            return getSTSAssumeRoleSessionCredentials(clientConfig, factory);
+            return getSTSAssumeRoleSessionCredentials(clientConfig);
         }
         if (AuthConstant.INI_TYPE_KEY_PAIR.equals(configType)) {
-            return getSTSGetSessionAccessKeyCredentials(clientConfig, factory);
+            return getSTSGetSessionAccessKeyCredentials(clientConfig);
         }
         if (AuthConstant.INI_TYPE_RAM.equals(configType)) {
-            return getInstanceProfileCredentials(clientConfig, factory);
+            return getInstanceProfileCredentials(clientConfig);
         }
         String accessKeyId = clientConfig.get(AuthConstant.INI_ACCESS_KEY_ID);
         String accessKeySecret = clientConfig.get(AuthConstant.INI_ACCESS_KEY_IDSECRET);
@@ -88,8 +86,7 @@ private AlibabaCloudCredentials createCredential(Map<String, String> clientConfi
         return new BasicCredentials(accessKeyId, accessKeySecret);
     }
 
-    private AlibabaCloudCredentials getSTSAssumeRoleSessionCredentials(Map<String, String> clientConfig,
-                                                                       CredentialsProviderFactory factory)
+    private AlibabaCloudCredentials getSTSAssumeRoleSessionCredentials(Map<String, String> clientConfig)
             throws ClientException {
         String accessKeyId = clientConfig.get(AuthConstant.INI_ACCESS_KEY_ID);
         String accessKeySecret = clientConfig.get(AuthConstant.INI_ACCESS_KEY_IDSECRET);
@@ -103,14 +100,12 @@ private AlibabaCloudCredentials getSTSAssumeRoleSessionCredentials(Map<String, S
         if (StringUtils.isEmpty(roleSessionName) || StringUtils.isEmpty(roleArn)) {
             throw new ClientException("The configured role_session_name or role_arn is empty");
         }
-        STSAssumeRoleSessionCredentialsProvider provider =
-                factory.createCredentialsProvider(new STSAssumeRoleSessionCredentialsProvider(accessKeyId,
-                        accessKeySecret, roleSessionName, roleArn, regionId, policy));
+        STSAssumeRoleSessionCredentialsProvider provider = new STSAssumeRoleSessionCredentialsProvider(accessKeyId,
+                        accessKeySecret, roleSessionName, roleArn, regionId, policy);
         return provider.getCredentials();
     }
 
-    private AlibabaCloudCredentials getSTSGetSessionAccessKeyCredentials(Map<String, String> clientConfig,
-                                                                         CredentialsProviderFactory factory)
+    private AlibabaCloudCredentials getSTSGetSessionAccessKeyCredentials(Map<String, String> clientConfig)
             throws ClientException {
         String publicKeyId = clientConfig.get(AuthConstant.INI_PUBLIC_KEY_ID);
         String privateKeyFile = clientConfig.get(AuthConstant.INI_PRIVATE_KEY_FILE);
@@ -121,20 +116,16 @@ private AlibabaCloudCredentials getSTSGetSessionAccessKeyCredentials(Map<String,
         if (StringUtils.isEmpty(publicKeyId) || StringUtils.isEmpty(privateKey)) {
             throw new ClientException("The configured public_key_id or private_key_file content is empty");
         }
-        STSGetSessionAccessKeyCredentialsProvider provider =
-                factory.createCredentialsProvider(new STSGetSessionAccessKeyCredentialsProvider(publicKeyId, privateKey));
+        STSGetSessionAccessKeyCredentialsProvider provider = new STSGetSessionAccessKeyCredentialsProvider(publicKeyId, privateKey);
         return provider.getCredentials();
     }
 
-    private AlibabaCloudCredentials getInstanceProfileCredentials(Map<String, String> clientConfig,
-                                                                  CredentialsProviderFactory factory)
-            throws ClientException {
+    private AlibabaCloudCredentials getInstanceProfileCredentials(Map<String, String> clientConfig) throws ClientException {
         String roleName = clientConfig.get(AuthConstant.INI_ROLE_NAME);
         if (StringUtils.isEmpty(roleName)) {
             throw new ClientException("The configured role_name is empty");
         }
-        InstanceProfileCredentialsProvider provider =
-                factory.createCredentialsProvider(new InstanceProfileCredentialsProvider(roleName));
+        InstanceProfileCredentialsProvider provider = new InstanceProfileCredentialsProvider(roleName);
         return provider.getCredentials();
     }
 
diff --git a/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/CredentialsProviderFactoryTest.java b/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/CredentialsProviderFactoryTest.java
deleted file mode 100644
index 4b630bed3b..0000000000
--- a/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/CredentialsProviderFactoryTest.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.aliyuncs.auth;
-
-import org.junit.Assert;
-import org.junit.Test;
-
-public class CredentialsProviderFactoryTest {
-    @Test
-    public void createCredentialsProviderTest(){
-        CredentialsProviderFactory factory = new CredentialsProviderFactory();
-        SystemPropertiesCredentialsProvider provider = new SystemPropertiesCredentialsProvider();
-        Assert.assertTrue(factory.createCredentialsProvider(provider) == provider);
-    }
-}
diff --git a/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/ProfileCredentialsProviderTest.java b/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/ProfileCredentialsProviderTest.java
index 990c14aedd..46cfd710bc 100644
--- a/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/ProfileCredentialsProviderTest.java
+++ b/aliyun-java-sdk-core/src/test/java/com/aliyuncs/auth/ProfileCredentialsProviderTest.java
@@ -47,12 +47,11 @@ public void createCredentialTest() throws NoSuchMethodException, InvocationTarge
         ProfileCredentialsProvider provider = new ProfileCredentialsProvider();
         Class providerClass = provider.getClass();
         Method createCredential = providerClass.getDeclaredMethod(
-                "createCredential", Map.class, CredentialsProviderFactory.class);
+                "createCredential", Map.class);
         createCredential.setAccessible(true);
-        CredentialsProviderFactory factory = new CredentialsProviderFactory();
         Map<String, String> client = new HashMap<String, String>();
         try {
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured client type is empty", e.getCause().getLocalizedMessage());
@@ -61,7 +60,7 @@ public void createCredentialTest() throws NoSuchMethodException, InvocationTarge
 
         client.put(AuthConstant.INI_TYPE, AuthConstant.INI_TYPE_RAM);
         try {
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured role_name is empty",
@@ -71,7 +70,7 @@ public void createCredentialTest() throws NoSuchMethodException, InvocationTarge
         client.clear();
         client.put(AuthConstant.INI_ACCESS_KEY_ID, AuthConstant.INI_TYPE_RAM);
         client.put(AuthConstant.INI_TYPE, "access_key");
-        Assert.assertNull(createCredential.invoke(provider, client, factory));
+        Assert.assertNull(createCredential.invoke(provider, client));
     }
 
     @Test
@@ -79,13 +78,12 @@ public void getSTSAssumeRoleSessionCredentialsTest() throws NoSuchMethodExceptio
         ProfileCredentialsProvider provider = new ProfileCredentialsProvider();
         Class providerClass = provider.getClass();
         Method createCredential = providerClass.getDeclaredMethod(
-                "createCredential", Map.class, CredentialsProviderFactory.class);
+                "createCredential", Map.class);
         createCredential.setAccessible(true);
-        CredentialsProviderFactory factory = new CredentialsProviderFactory();
         Map<String, String> client = new HashMap<String, String>();
         client.put(AuthConstant.INI_TYPE, AuthConstant.INI_TYPE_ARN);
         try {
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured access_key_id or access_key_secret is empty",
@@ -94,7 +92,7 @@ public void getSTSAssumeRoleSessionCredentialsTest() throws NoSuchMethodExceptio
 
         try {
             client.put(AuthConstant.INI_ACCESS_KEY_ID, AuthConstant.INI_TYPE_ARN);
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured access_key_id or access_key_secret is empty",
@@ -102,7 +100,7 @@ public void getSTSAssumeRoleSessionCredentialsTest() throws NoSuchMethodExceptio
         }
         try {
             client.put(AuthConstant.INI_ACCESS_KEY_IDSECRET, AuthConstant.INI_TYPE_ARN);
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured role_session_name or role_arn is empty",
@@ -110,7 +108,7 @@ public void getSTSAssumeRoleSessionCredentialsTest() throws NoSuchMethodExceptio
         }
         try {
             client.put(AuthConstant.INI_ROLE_SESSION_NAME, AuthConstant.INI_TYPE_ARN);
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
         } catch (Exception e) {
             Assert.assertEquals("The configured role_session_name or role_arn is empty",
                     e.getCause().getLocalizedMessage());
@@ -122,13 +120,12 @@ public void  getSTSGetSessionAccessKeyCredentialsTest() throws NoSuchMethodExcep
         ProfileCredentialsProvider provider = new ProfileCredentialsProvider();
         Class providerClass = provider.getClass();
         Method createCredential = providerClass.getDeclaredMethod(
-                "createCredential", Map.class, CredentialsProviderFactory.class);
+                "createCredential", Map.class);
         createCredential.setAccessible(true);
-        CredentialsProviderFactory factory = new CredentialsProviderFactory();
         Map<String, String> client = new HashMap<String, String>();
         client.put(AuthConstant.INI_TYPE, AuthConstant.INI_TYPE_KEY_PAIR);
         try {
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured private_key_file is empty",
@@ -137,7 +134,7 @@ public void  getSTSGetSessionAccessKeyCredentialsTest() throws NoSuchMethodExcep
         client.put(AuthConstant.INI_PRIVATE_KEY_FILE, "sads");
         AuthUtils.setPrivateKey("test");
         try {
-            createCredential.invoke(provider, client, factory);
+            createCredential.invoke(provider, client);
             Assert.fail();
         } catch (Exception e) {
             Assert.assertEquals("The configured public_key_id or private_key_file content is empty",
@@ -153,7 +150,7 @@ public void createCredentialsProviderTest() throws
         ProfileCredentialsProvider profileCredentialsProvider = new ProfileCredentialsProvider();
         Class providerClass = profileCredentialsProvider.getClass();
         Method createCredential = providerClass.getDeclaredMethod(
-                "createCredential", Map.class, CredentialsProviderFactory.class);
+                "createCredential", Map.class);
         createCredential.setAccessible(true);
         Map<String, String> client = new HashMap<String, String>();
         client.put(AuthConstant.INI_TYPE, AuthConstant.INI_TYPE_ARN);
@@ -165,10 +162,9 @@ public void createCredentialsProviderTest() throws
         STSAssumeRoleSessionCredentialsProvider stsAssumeRoleSessionCredentialsProvider =
                 Mockito.mock(STSAssumeRoleSessionCredentialsProvider.class);
         Mockito.when(stsAssumeRoleSessionCredentialsProvider.getCredentials()).thenReturn(null);
-        CredentialsProviderFactory factory = Mockito.mock(CredentialsProviderFactory.class);
-        Mockito.when(factory.createCredentialsProvider(Mockito.any(STSAssumeRoleSessionCredentialsProvider.class))).
+        Mockito.when(Mockito.any(STSAssumeRoleSessionCredentialsProvider.class)).
                 thenReturn(stsAssumeRoleSessionCredentialsProvider);
-        Assert.assertNull(createCredential.invoke(profileCredentialsProvider, client, factory));
+        Assert.assertNull(createCredential.invoke(profileCredentialsProvider, client));
 
         client.clear();
         client.put(AuthConstant.INI_TYPE, AuthConstant.INI_TYPE_KEY_PAIR);
@@ -179,9 +175,9 @@ public void createCredentialsProviderTest() throws
         STSGetSessionAccessKeyCredentialsProvider stsGetSessionAccessKeyCredentialsProvider =
                 Mockito.mock(STSGetSessionAccessKeyCredentialsProvider.class);
         Mockito.when(stsGetSessionAccessKeyCredentialsProvider.getCredentials()).thenReturn(null);
-        Mockito.when(factory.createCredentialsProvider(Mockito.any(STSGetSessionAccessKeyCredentialsProvider.class))).
+        Mockito.when(Mockito.any(STSGetSessionAccessKeyCredentialsProvider.class)).
                 thenReturn(stsGetSessionAccessKeyCredentialsProvider);
-        Assert.assertNull(createCredential.invoke(profileCredentialsProvider, client, factory));
+        Assert.assertNull(createCredential.invoke(profileCredentialsProvider, client));
         AuthUtils.setPrivateKey(null);
 
         client.clear();
@@ -190,9 +186,9 @@ public void createCredentialsProviderTest() throws
         InstanceProfileCredentialsProvider instanceProfileCredentialsProvider =
                 Mockito.mock(InstanceProfileCredentialsProvider.class);
         Mockito.when(instanceProfileCredentialsProvider.getCredentials()).thenReturn(null);
-        Mockito.when(factory.createCredentialsProvider(Mockito.any(InstanceProfileCredentialsProvider.class))).
+        Mockito.when(Mockito.any(InstanceProfileCredentialsProvider.class)).
                 thenReturn(instanceProfileCredentialsProvider);
-        Assert.assertNull(createCredential.invoke(profileCredentialsProvider, client, factory));
+        Assert.assertNull(createCredential.invoke(profileCredentialsProvider, client));
     }
 
     @Test