diff --git a/src/main/java/com/qiniu/http/Response.java b/src/main/java/com/qiniu/http/Response.java
index 15c8bd79e..4f2cf43eb 100644
--- a/src/main/java/com/qiniu/http/Response.java
+++ b/src/main/java/com/qiniu/http/Response.java
@@ -116,7 +116,10 @@ public static Response createError(okhttp3.Response response, String address, do
                 address, duration, error, body);
     }
 
-
+    public static Response createInvalidArgument( String error) {
+        return new Response(null, InvalidArgument, "", "", "",
+                "", 0, error, null);
+    }
     private static String via(okhttp3.Response response) {
         String via;
         if (!(via = response.header("X-Via", "")).equals("")) {
diff --git a/src/main/java/com/qiniu/rtc/RtcRoomManager.java b/src/main/java/com/qiniu/rtc/RtcRoomManager.java
index a2e56fe64..c49247aec 100644
--- a/src/main/java/com/qiniu/rtc/RtcRoomManager.java
+++ b/src/main/java/com/qiniu/rtc/RtcRoomManager.java
@@ -8,6 +8,8 @@
 import com.qiniu.util.Auth;
 import com.qiniu.util.StringMap;
 
+import java.util.Objects;
+
 public class RtcRoomManager {
     private final Auth auth;
     private final String host;
@@ -75,6 +77,46 @@ private String getLink(String appId, String roomName, String param) {
         return builder.toString();
     }
 
+    /**
+     *
+     * @param appId
+     * @param roomName
+     * @param start 开始时间：20200317000000
+     * @param end 结束时间：20200317200000
+     * @param G 查询的粒度，可选(5min, hour, day, month)，默认为day
+     * @param total 表示查询房间的总时⻓ int64
+     * @param kind 表示类型，Audio/SD/HD/UHD string
+     * @return Response
+     * @throws QiniuException
+     */
+    public Response getCalculateForRoom(String appId, String roomName, String start, String end, String G, int total, String kind) throws QiniuException {
+        if (appId == null || roomName == null || start == null || end == null) {
+            return Response.createInvalidArgument("some request param is null");
+        }
+        StringBuilder builder = new StringBuilder();
+        builder.append(host);
+        builder.append("/v3/apps/").append(appId).append("/rooms/").append(roomName).append("/metric?");
+        if (start != null) {
+            builder.append("start=").append(start).append("&");
+        }
+        if (end != null) {
+            builder.append("end=").append(end);
+        }
+        if (G != null) {
+            builder.append("&granule=").append(G);
+        }
+        if (total > 0) {
+            builder.append("&total=").append(total);
+        }
+        if (kind != null) {
+            builder.append("&kind=").append(kind);
+        }
+        String url = builder.toString();
+        StringMap headers = auth.authorizationV2(builder.toString());
+        System.out.println("url："+url);
+        return client.get(url, headers);
+    }
+
     /**
      * @param appId      房间所属帐号的 app
      * @param roomName   房间名称，需满足规格 ^[a-zA-Z0-9_-]{3,64}$
diff --git a/src/test/java/test/com/qiniu/rtc/RtcTest.java b/src/test/java/test/com/qiniu/rtc/RtcTest.java
index 86e5adb9c..630797712 100644
--- a/src/test/java/test/com/qiniu/rtc/RtcTest.java
+++ b/src/test/java/test/com/qiniu/rtc/RtcTest.java
@@ -5,6 +5,7 @@
 import com.qiniu.rtc.RtcAppManager;
 import com.qiniu.rtc.RtcRoomManager;
 import com.qiniu.util.Auth;
+import org.junit.Test;
 import test.com.qiniu.TestConfig;
 
 
@@ -95,6 +96,16 @@ public void getRoomToken() {
         }
     }
 
+    @Test
+    public void getCalculateForRoom(){
+        try {
+            Response response =rmanager.getCalculateForRoom("dix05zn6q", "roomtest", "20200317000000", "20200317193000", null,0,null);
+            System.out.print(getString(response));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     private String getString(Response response) {
         String[] resJson = response.getInfo().split("\n");
         return response.statusCode + "\n" + resJson[2];