diff --git a/KS3/Headers.cs b/KS3/Headers.cs
index 4f86669333956c115f4e38f37cd20a1a4de1ba9b..06220a9452fcdaa1d8e76500902be95078b84ee5 100644
--- a/KS3/Headers.cs
+++ b/KS3/Headers.cs
@@ -68,11 +68,16 @@ namespace KS3
 
         /** Header for the WRITE_ACP permission */
         public static String PERMISSION_WRITE_ACP = "x-kss-grant-write-acp";
+
         /** Header for the copy object*/
         public static String XKssCopySource = "x-kss-copy-source";
 
+        /** Header for whether to copy the metadata information of the source object. */
+        public static String METADATA_DIRECTIVE = "x-kss-metadata-directive";
+
         /**callback */
         public static String AsynchronousProcessingList = "kss-async-process";
+
         public static String NotifyURL = "kss-notifyurl";
         public static String TaskId = "TaskID";
     }
diff --git a/KS3/KS3Client.cs b/KS3/KS3Client.cs
index fa33975f38d6f9fc157077887fd8ac31f3810855..b60be066fbbcb2f1b7c3f14db1110345e56266c1 100644
--- a/KS3/KS3Client.cs
+++ b/KS3/KS3Client.cs
@@ -628,6 +628,12 @@ namespace KS3
             else if (copyObjectRequest.CannedAcl != null)
                 request.setHeader(Headers.KS3_CANNED_ACL, copyObjectRequest.CannedAcl.getCannedAclHeader());
             request.getHeaders()[Headers.CONTENT_LENGTH] = "0";
+            ObjectMetadata metadata = copyObjectRequest.Metadata;
+            if (metadata == null)
+            {
+                metadata = new ObjectMetadata();
+            }
+            populateRequestMetadata(metadata, request);
             return this.invoke(request, new CopyObjectResultUnmarshaller(), copyObjectRequest.DestinationBucket, copyObjectRequest.DestinationObject);
         }
         /// <summary>
diff --git a/KS3/Model/CopyObjectRequest.cs b/KS3/Model/CopyObjectRequest.cs
index 370407024f85480fb9d04a6474f8b5540d3159ba..a85be8d54c4cfcc3503edcc6702cfbe109dd12a5 100644
--- a/KS3/Model/CopyObjectRequest.cs
+++ b/KS3/Model/CopyObjectRequest.cs
@@ -7,6 +7,37 @@ namespace KS3.Model
 {
     public class CopyObjectRequest:KS3Request
     {
+        public CopyObjectRequest() {}
+
+        public CopyObjectRequest(string sourceBucket, string sourceObject, string destinationBucket, string destinationObject)
+        {
+            this.sourceBucket = sourceBucket;
+            this.sourceObject = sourceObject;
+            this.destinationBucket = destinationBucket;
+            this.destinationObject = destinationObject;
+        }
+
+        public CopyObjectRequest(string sourceBucket, string sourceObject, string destinationBucket, string destinationObject, CannedAccessControlList cannedAcl)
+        {
+            this.sourceBucket = sourceBucket;
+            this.sourceObject = sourceObject;
+            this.destinationBucket = destinationBucket;
+            this.destinationObject = destinationObject;
+            this.cannedAcl = cannedAcl;
+        }
+
+        public CopyObjectRequest(string sourceBucket, string sourceObject, string destinationBucket, string destinationObject, CannedAccessControlList cannedAcl, AccessControlList accessControlList)
+        {
+            this.sourceBucket = sourceBucket;
+            this.sourceObject = sourceObject;
+            this.destinationBucket = destinationBucket;
+            this.destinationObject = destinationObject;
+            this.cannedAcl = cannedAcl;
+            this.accessControlList = accessControlList;
+        }
+
+        public ObjectMetadata Metadata { get; set; }
+
         private String sourceBucket;
 
         public String SourceBucket
diff --git a/KS3Sample/KS3Sample.cs b/KS3Sample/KS3Sample.cs
index e9620044432fe2f9e94efec4c274da7922c4efbb..dd8b03c549d33a84e4cd2e3c380f594d5e45e9e9 100644
--- a/KS3Sample/KS3Sample.cs
+++ b/KS3Sample/KS3Sample.cs
@@ -464,8 +464,13 @@ namespace KS3Sample
                 copyObjectRequest.SourceBucket = bucketName;
                 copyObjectRequest.DestinationBucket = "test2-zzy-jr";
                 copyObjectRequest.DestinationObject = objKeyNameFileData;
-                //CannedAccessControlList cannedAcl=new CannedAccessControlList(CannedAccessControlList.PUBLICK_READ_WRITE);
-                //copyObjectRequest.CannedAcl = cannedAcl;
+                // CannedAccessControlList cannedAcl=new CannedAccessControlList(CannedAccessControlList.PUBLICK_READ_WRITE);
+                // copyObjectRequest.CannedAcl = cannedAcl;
+                // 指定目标Object的元信息
+                // var metadata = new ObjectMetadata();
+                // metadata.setHeader(Headers.METADATA_DIRECTIVE, "REPLACE");
+                // metadata.setHeader(Headers.CONTENT_TYPE, "text/html");
+                // copyObjectRequest.Metadata = metadata;
 
                 CopyObjectResult result = ks3Client.copyObject(copyObjectRequest);
                 Console.WriteLine("---------------------\n");