diff --git a/src/main/java/com/qcloud/cos/COSEncryptionClient.java b/src/main/java/com/qcloud/cos/COSEncryptionClient.java
index 33e82305..b148d755 100644
--- a/src/main/java/com/qcloud/cos/COSEncryptionClient.java
+++ b/src/main/java/com/qcloud/cos/COSEncryptionClient.java
@@ -49,6 +49,7 @@
 import com.qcloud.cos.model.PutObjectResult;
 import com.qcloud.cos.model.UploadPartRequest;
 import com.qcloud.cos.model.UploadPartResult;
+import com.tencentcloudapi.common.profile.ClientProfile;
 
 public class COSEncryptionClient extends COSClient implements COSEncryption {
 
@@ -67,6 +68,12 @@ public COSEncryptionClient(COSCredentialsProvider credentialsProvider,
         this(null, credentialsProvider, kekMaterialsProvider, clientConfig, cryptoConfig);
     }
 
+    public COSEncryptionClient(COSCredentialsProvider credentialsProvider,
+            EncryptionMaterialsProvider kekMaterialsProvider, ClientConfig clientConfig,
+            CryptoConfiguration cryptoConfig,ClientProfile clientProfile) {
+        this(null, credentialsProvider, kekMaterialsProvider, clientConfig, cryptoConfig, clientProfile);
+    }
+
     public COSEncryptionClient(QCLOUDKMS kms, COSCredentialsProvider credentialsProvider,
             EncryptionMaterialsProvider kekMaterialsProvider, ClientConfig clientConfig,
             CryptoConfiguration cryptoConfig) {
@@ -81,6 +88,20 @@ public COSEncryptionClient(QCLOUDKMS kms, COSCredentialsProvider credentialsProv
                 kekMaterialsProvider, cryptoConfig);
     }
 
+    public COSEncryptionClient(QCLOUDKMS kms, COSCredentialsProvider credentialsProvider,
+            EncryptionMaterialsProvider kekMaterialsProvider, ClientConfig clientConfig,
+            CryptoConfiguration cryptoConfig, ClientProfile clientProfile) {
+        super(credentialsProvider.getCredentials(), clientConfig);
+        assertParameterNotNull(kekMaterialsProvider,
+                        "EncryptionMaterialsProvider parameter must not be null.");
+        assertParameterNotNull(cryptoConfig, "CryptoConfiguration parameter must not be null.");
+        this.isKMSClientInternal = kms == null;
+        this.kms = isKMSClientInternal ?
+                        newTencentCloudKMSClient(credentialsProvider, clientConfig, cryptoConfig, clientProfile) : kms;
+        this.crypto = new CryptoModuleDispatcher(this.kms, new COSDirectImpl(), credentialsProvider,
+                        kekMaterialsProvider, cryptoConfig);
+    }
+
     private TencentCloudKMSClient newTencentCloudKMSClient(
             COSCredentialsProvider credentialsProvider,
             ClientConfig clientConfig,
@@ -95,6 +116,21 @@ private TencentCloudKMSClient newTencentCloudKMSClient(
         return kmsClient;
     }
 
+    private TencentCloudKMSClient newTencentCloudKMSClient(
+            COSCredentialsProvider credentialsProvider,
+            ClientConfig clientConfig,
+            CryptoConfiguration cryptoConfig,
+            ClientProfile clientProfile) {
+        String region = cryptoConfig.getKmsRegion();
+        if (region == null) {
+            region = clientConfig.getRegion().getRegionName();
+        }
+
+        final TencentCloudKMSClient kmsClient = new TencentCloudKMSClient(credentialsProvider, region, clientProfile);
+
+        return kmsClient;
+    }
+
     private void assertParameterNotNull(Object parameterValue, String errorMessage) {
         if (parameterValue == null)
             throw new IllegalArgumentException(errorMessage);
diff --git a/src/main/java/com/qcloud/cos/demo/KMSEncryptionClientDemo.java b/src/main/java/com/qcloud/cos/demo/KMSEncryptionClientDemo.java
index 9c96fe20..c0e988ce 100644
--- a/src/main/java/com/qcloud/cos/demo/KMSEncryptionClientDemo.java
+++ b/src/main/java/com/qcloud/cos/demo/KMSEncryptionClientDemo.java
@@ -28,6 +28,8 @@
 import com.qcloud.cos.transfer.TransferManager;
 import com.qcloud.cos.transfer.TransferManagerConfiguration;
 import com.qcloud.cos.transfer.Upload;
+import com.tencentcloudapi.common.profile.ClientProfile;
+import com.tencentcloudapi.common.profile.HttpProfile;
 
 public class KMSEncryptionClientDemo {
 	static String cmk = "kms-xxxxxxx";
@@ -67,6 +69,22 @@ static COSClient createCosClient(String region) {
 
         // 生成加密客户端EncryptionClient, COSEncryptionClient是COSClient的子类, 所有COSClient支持的接口他都支持。
         // EncryptionClient覆盖了COSClient上传下载逻辑，操作内部会执行加密操作，其他操作执行逻辑和COSClient一致
+
+        // in case you want to use different kms server:
+        //{
+        //String kmsEndPoint = "";
+        ///HttpProfile httpProfile = new HttpProfile();
+        //httpProfile.setEndpoint(kmsEndPoint);
+        //httpProfile.setProtocol(HttpProfile.REQ_HTTP);
+        //ClientProfile clientProfile = new ClientProfile();
+        //clientProfile.setHttpProfile(httpProfile);
+
+        //COSEncryptionClient cosEncryptionClient =
+        //        new COSEncryptionClient(new COSStaticCredentialsProvider(cred),
+        //                new KMSEncryptionMaterialsProvider(encryptionMaterials), clientConfig,
+        //                cryptoConf,clientProfile);
+        //}
+        
         COSEncryptionClient cosEncryptionClient =
                 new COSEncryptionClient(new COSStaticCredentialsProvider(cred),
                         new KMSEncryptionMaterialsProvider(encryptionMaterials), clientConfig,
diff --git a/src/main/java/com/qcloud/cos/internal/crypto/TencentCloudKMSClient.java b/src/main/java/com/qcloud/cos/internal/crypto/TencentCloudKMSClient.java
index 69a00031..17e26355 100644
--- a/src/main/java/com/qcloud/cos/internal/crypto/TencentCloudKMSClient.java
+++ b/src/main/java/com/qcloud/cos/internal/crypto/TencentCloudKMSClient.java
@@ -29,6 +29,7 @@
 import com.tencentcloudapi.kms.v20190118.models.EncryptResponse;
 import com.tencentcloudapi.kms.v20190118.models.GenerateDataKeyRequest;
 import com.tencentcloudapi.kms.v20190118.models.GenerateDataKeyResponse;
+import com.tencentcloudapi.common.profile.ClientProfile;
 
 /**
  * Client for accessing TencentCloud KMS.
@@ -45,6 +46,14 @@ public TencentCloudKMSClient(COSCredentialsProvider cosCredentialsProvider, Stri
         this.kmsClient = new KmsClient(credential, region);
     } 
 
+    public TencentCloudKMSClient(COSCredentialsProvider cosCredentialsProvider, String region, ClientProfile clientProfile) {
+        COSCredentials cosCredentials = cosCredentialsProvider.getCredentials();
+        String secretId = cosCredentials.getCOSAccessKeyId();
+        String secretKey = cosCredentials.getCOSSecretKey();
+
+        Credential credential = new Credential(secretId, secretKey);
+        this.kmsClient = new KmsClient(credential, region, clientProfile);
+    }
     /**
      * Generates a unique symmetric data key for client-side encryption. This operation returns a plaintext copy of the
      * data key and a copy that is encrypted under a customer master key (CMK) that you specify. You can use the