diff --git a/app/src/main/java/com/example/citrusclient/viewmodels/SettingsViewModel.java b/app/src/main/java/com/example/citrusclient/viewmodels/SettingsViewModel.java
new file mode 100644
index 0000000..022b6ef
--- /dev/null
+++ b/app/src/main/java/com/example/citrusclient/viewmodels/SettingsViewModel.java
@@ -0,0 +1,116 @@
+package com.example.citrusclient.viewmodels;
+
+import com.example.citrusclient.Citrus;
+import com.example.citrusclient.rest.AccountsRest;
+
+import androidx.lifecycle.ViewModel;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.jackson.JacksonConverterFactory;
+
+public class SettingsViewModel extends ViewModel {
+    private final Retrofit retrofit;
+    private final AccountsRest accountsRest;
+
+    private Citrus citrus;
+
+    public SettingsViewModel(){
+        retrofit = new Retrofit.Builder()
+                .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/citrus/")
+                .addConverterFactory(JacksonConverterFactory.create())
+                .build();
+        this.accountsRest = retrofit.create(AccountsRest.class);
+    }
+
+    //なんちゃって通信ver1
+    //PW変更時のサーバ通信プログラム
+    public void changePW(String accountId, String old_password, String new_password,String token){
+        Call<String> call = accountsRest.changePW(accountId,old_password,new_password,token);
+        call.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, Response<String> response) {
+                if (response.isSuccessful()) {
+                    System.out.println("success");
+                    //成功処理
+                } else {
+                    System.out.println("fail");
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                System.out.println("NetWorkError"+t);
+            }
+        });
+    }
+    //通信ver2
+    //アカウント削除
+    public void deleteId(String accountId, String token, String password){
+        Call<String> call =accountsRest.deleteId(accountId,token,password);
+        call.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, Response<String> response) {
+                if(response.isSuccessful()){
+                    System.out.println("success");
+                    //成功処理
+                }else{
+                    System.out.println("fail");
+                    //もしコンソール表記をするならこの下に処理を記載
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                System.out.println("NetWorkError"+t);
+                //もしコンソール表記をするならこの下に処理を記載
+            }
+        });
+    }
+
+    //通信Ver3
+    //色変更
+    public void changeColor(String accountId,String accountColor, String token){
+        Call<String> call =accountsRest.changeColor(accountId,accountColor,token);
+        call.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, Response<String> response) {
+                if(response.isSuccessful()){
+                    System.out.println("success");
+                    citrus.setAccountColor(accountColor);
+                }else{
+                    System.out.println("fail");
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                System.out.println("NetWorkError"+t);
+            }
+        });
+    }
+
+    //通信Ver4
+    //アカウント名変更
+    public void changeAccount(String accountId,String accountColor, String token){
+        Call<String> call =accountsRest.changeColor(accountId,accountColor,token);
+        call.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, Response<String> response) {
+                if(response.isSuccessful()){
+                    System.out.println("success");
+                    citrus.setAccountId(accountColor);
+                }else{
+                    System.out.println("fail");
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                System.out.println("NetWorkError"+t);
+            }
+        });
+    }
+
+}