diff --git a/src/main/java/com/ntlab/irisserver/entities/RoomJson.java b/src/main/java/com/ntlab/irisserver/entities/RoomJson.java
new file mode 100644
index 0000000..f971038
--- /dev/null
+++ b/src/main/java/com/ntlab/irisserver/entities/RoomJson.java
@@ -0,0 +1,39 @@
+package com.ntlab.irisserver.entities;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class RoomJson {
+    @JsonProperty("rid")
+    private String rid;
+
+    @JsonProperty("state")
+    private int state;
+
+    @JsonProperty("ownerName")
+    private String ownerName;
+
+    @JsonProperty("members")
+    List<Member> members = new ArrayList<>();
+
+    //コンストラクター
+    public RoomJson(Room r){
+        this.rid = r.rid;
+        this.ownerName = r.ownerName;
+        this.state = r.getState();
+        this.members = r.getMembers();
+    }
+
+    //getter
+    public String getRid() {return this.rid;}
+
+    public int getState() {return this.state;}
+
+    public String getOwnerName() {return this.ownerName;}
+
+    public List<Member> getMembers() {return this.members;}
+}