diff --git a/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java b/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java
new file mode 100644
index 0000000..6635b43
--- /dev/null
+++ b/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java
@@ -0,0 +1,4 @@
+package com.example.cosmosclient.resources;
+
+public interface GroupsRest {
+}
diff --git a/app/src/main/java/com/example/cosmosclient/resources/UsersRest.java b/app/src/main/java/com/example/cosmosclient/resources/UsersRest.java
new file mode 100644
index 0000000..2b40d63
--- /dev/null
+++ b/app/src/main/java/com/example/cosmosclient/resources/UsersRest.java
@@ -0,0 +1,21 @@
+package com.example.cosmosclient.resources;
+
+import com.example.cosmosclient.views.SigninResponse;
+import com.example.cosmosclient.views.SignupResponse;
+
+import retrofit2.Call;
+import retrofit2.http.Field;
+import retrofit2.http.FormUrlEncoded;
+import retrofit2.http.POST;
+import retrofit2.http.Path;
+import retrofit2.http.Query;
+
+public interface UsersRest {
+    @POST("users/{uId}/login")
+    Call<SigninResponse> loginList(@Path("uId") String uId, @Query("pw") String pw);
+
+    @POST("users")
+    @FormUrlEncoded
+    Call<SignupResponse> createUser(@Field("name") String name, @Field("pw") String pw, @Field("icon-image") String icon_image);
+
+}
diff --git a/app/src/main/java/com/example/cosmosclient/views/SigninActivity.java b/app/src/main/java/com/example/cosmosclient/views/SigninActivity.java
index d95f002..b01364f 100644
--- a/app/src/main/java/com/example/cosmosclient/views/SigninActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/SigninActivity.java
@@ -11,6 +11,7 @@
 import android.widget.Toast;
 
 import com.example.cosmosclient.R;
+import com.example.cosmosclient.resources.UsersRest;
 
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -48,7 +49,7 @@
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
         //interfaceから実装を取得
-        final SigninService signinService = retrofit.create(SigninService.class);
+        final UsersRest signinService = retrofit.create(UsersRest.class);
 
         //Sign inボタンの処理
         SigninButton.setOnClickListener(new View.OnClickListener() {
@@ -65,7 +66,6 @@
                         if (response.isSuccessful()) {
                             SigninResponse result = response.body();
                             Intent intent = new Intent(getApplication(), GroupList.class);
-                            //intent.putExtra("UserInfomation",result);
                             Toast.makeText(SigninActivity.this,
                                     "ログインしました", Toast.LENGTH_SHORT).show();
 
diff --git a/app/src/main/java/com/example/cosmosclient/views/SigninService.java b/app/src/main/java/com/example/cosmosclient/views/SigninService.java
deleted file mode 100644
index 84dcb18..0000000
--- a/app/src/main/java/com/example/cosmosclient/views/SigninService.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.example.cosmosclient.views;
-
-import retrofit2.Call;
-import retrofit2.http.POST;
-import retrofit2.http.Path;
-import retrofit2.http.Query;
-
-public interface SigninService {
-    @POST("users/{uId}/login")
-    Call<SigninResponse> loginList(@Path("uId") String uId, @Query("pw") String pw);
-}
diff --git a/app/src/main/java/com/example/cosmosclient/views/SignupActivity.java b/app/src/main/java/com/example/cosmosclient/views/SignupActivity.java
index b3cffe2..2348adf 100644
--- a/app/src/main/java/com/example/cosmosclient/views/SignupActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/SignupActivity.java
@@ -11,6 +11,7 @@
 import android.widget.Toast;
 
 import com.example.cosmosclient.R;
+import com.example.cosmosclient.resources.UsersRest;
 
 
 import retrofit2.Call;
@@ -20,7 +21,6 @@
 import retrofit2.converter.jackson.JacksonConverterFactory;
 
 public class SignupActivity extends AppCompatActivity{
-//    public static final String UserInfomation="com.example.cosmosclient.views";
     private boolean nameEnable;
     private boolean pwEnable;
     private boolean cpwEnable;
@@ -37,7 +37,7 @@
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
         //interfaceから実装を取得
-        final SignupService signupService = retrofit.create(SignupService.class);
+        final UsersRest signupService = retrofit.create(UsersRest.class);
 
         //各種idを取得
         Button LoginButton = findViewById(R.id.LoginButton);
@@ -80,7 +80,6 @@
                         if (response.isSuccessful()) {
                             SignupResponse result = response.body();
                             Intent intent = new Intent(getApplication(), GroupList.class);
-                            //intent.putExtra("UserInfomation",result);
 
                             //test
                             System.out.println(result.uId);
diff --git a/app/src/main/java/com/example/cosmosclient/views/SignupService.java b/app/src/main/java/com/example/cosmosclient/views/SignupService.java
deleted file mode 100644
index 2ac3075..0000000
--- a/app/src/main/java/com/example/cosmosclient/views/SignupService.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.example.cosmosclient.views;
-
-import retrofit2.Call;
-import retrofit2.http.Field;
-import retrofit2.http.FormUrlEncoded;
-import retrofit2.http.POST;
-
-public interface SignupService {
-    @POST("users")
-    @FormUrlEncoded
-    Call<SignupResponse> createUser(@Field("name") String name, @Field("pw") String pw, @Field("icon-image") String icon_image);
-}