diff --git a/src/main/java/com/example/cosmos_serversb/models/Users.java b/src/main/java/com/example/cosmos_serversb/models/Users.java
index 18a6cd2..6416916 100644
--- a/src/main/java/com/example/cosmos_serversb/models/Users.java
+++ b/src/main/java/com/example/cosmos_serversb/models/Users.java
@@ -23,6 +23,7 @@
                 .configure() // configures settings from hibernate.cfg.xml
                 .build();
         try {
+
             sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();
         }
         catch (Exception e) {
diff --git a/src/test/java/hibernateTest/entities/Group.java b/src/test/java/hibernateTest/entities/Group.java
index e193cdd..c90b14e 100644
--- a/src/test/java/hibernateTest/entities/Group.java
+++ b/src/test/java/hibernateTest/entities/Group.java
@@ -86,8 +86,8 @@
 
     public void addMember(String uId){
         //test用
-        User user = new User(uId, uId, "http:test", "sa", "hogehoge");
-        //User user = Users.getInstance().getUserById(uId);
+//        User user = new User(uId, uId, "http:test", "sa", "hogehoge");
+        User user = Users.getInstance().getUserById(uId);
         members.add(user);
         user.addGroups(this);
     }
diff --git a/src/test/java/hibernateTest/models/Main.java b/src/test/java/hibernateTest/models/Main.java
index 22f26f6..141bccd 100644
--- a/src/test/java/hibernateTest/models/Main.java
+++ b/src/test/java/hibernateTest/models/Main.java
@@ -7,7 +7,8 @@
     public static void main(String args[]){
         NativeApiIllustrationTest test = new NativeApiIllustrationTest();
         test.setUp();
-        test.testBasicUsage();
+//        test.testBasicUsage();//Hibernate全般のテストが行えます。
+        test.GroupMemberTest();//Group-Memberテーブルに関するテストが行えます。
         test.tearDown();
     }
 }
diff --git a/src/test/java/hibernateTest/models/NativeApiIllustrationTest.java b/src/test/java/hibernateTest/models/NativeApiIllustrationTest.java
index 65b60aa..b1d902c 100644
--- a/src/test/java/hibernateTest/models/NativeApiIllustrationTest.java
+++ b/src/test/java/hibernateTest/models/NativeApiIllustrationTest.java
@@ -77,6 +77,10 @@
 		}
 	}
 
+	public SessionFactory getSessionFactory() {
+		return sessionFactory;
+	}
+
 	public void testBasicUsage() {
 		int location = 001;//YOLPのコード。警告を減らすために使用。
 		/*データの保存(データベースに投入)*/
@@ -277,4 +281,33 @@
 	}
 
 
+	public void GroupMemberTest(){
+		Session session = sessionFactory.openSession();
+		session.beginTransaction();
+		session.save( new User("I", "011","http://test1","hoge", "011" ) );
+		session.save( new User("YOU", "022","http://test2","hoge", "011" ) );
+		session.save( new User("HE", "033","http://test3","hoge", "011" ) );
+		session.save( new Group("111", "http://test1", "family", "011" ) );
+		session.save( new Group("222", "http://test2", "friend", "022" ) );
+		session.getTransaction().commit();
+		session.close();
+
+
+		session = sessionFactory.openSession();
+		session.beginTransaction();
+		System.out.println("グループテーブル");
+		List groupResult = session.createQuery( "from Group" ).list();
+		for ( Group group : (List<Group>) groupResult ) {
+			System.out.println( "Group (" + group.getgId() + ") : " + group.getUri() + ": " + group.getName() + " member: ");
+		}
+
+		List userResult = session.createQuery( "from User" ).list();
+		for ( User user : (List<User>) userResult ) {
+			System.out.println( "User (" + user.getuId() + ") : " + user.getUri());
+		}
+
+		session.getTransaction().commit();
+		session.close();
+	}
+
 }
diff --git a/src/test/java/hibernateTest/models/Users.java b/src/test/java/hibernateTest/models/Users.java
index 09ccffc..797f930 100644
--- a/src/test/java/hibernateTest/models/Users.java
+++ b/src/test/java/hibernateTest/models/Users.java
@@ -52,6 +52,7 @@
     }
 
     private Users() {
+        setUp();
     }
 
     public static Users getInstance() {