diff --git a/app/src/main/java/com/example/sprout/refactor/model/BaseModel.java b/app/src/main/java/com/example/sprout/refactor/model/BaseModel.java
new file mode 100644
index 0000000..435c1ce
--- /dev/null
+++ b/app/src/main/java/com/example/sprout/refactor/model/BaseModel.java
@@ -0,0 +1,42 @@
+package com.example.sprout.refactor.model;
+
+import io.reactivex.Observable;
+import io.reactivex.subjects.BehaviorSubject;
+import io.reactivex.subjects.Subject;
+
+/**
+ * Entityを管理するクラスの基底クラス
+ * <T>:Entity
+ * <Params>:CRUDに必要なParams
+ * Created by matsumoto_k on 2017/12/19.
+ */
+public abstract class BaseModel<T, Params> {
+    protected final Subject<T> entitySubject = BehaviorSubject.<T>create().toSerialized();
+    protected final Subject<Throwable> errorSubject = BehaviorSubject.<Throwable>create().toSerialized();
+
+    public abstract void create(Params params);
+
+    public abstract void read(Params params);
+
+    public abstract void update(Params params);
+
+    public abstract void delete(Params params);
+
+    /**
+     * Entityを保持するSubjectをObservableに変換して返す
+     *
+     * @return Observable<T>
+     */
+    public Observable<T> getEntityObservable() {
+        return entitySubject.hide();
+    }
+
+    /**
+     * Errorを保持するSubjectをObservbaleに変換して返す
+     *
+     * @return
+     */
+    public Observable<Throwable> getErrorObservable() {
+        return errorSubject.hide();
+    }
+}
diff --git a/app/src/main/java/com/example/sprout/refactor/model/RegistrationModel.java b/app/src/main/java/com/example/sprout/refactor/model/RegistrationModel.java
index 79ce8a7..5ecc0e9 100644
--- a/app/src/main/java/com/example/sprout/refactor/model/RegistrationModel.java
+++ b/app/src/main/java/com/example/sprout/refactor/model/RegistrationModel.java
@@ -3,49 +3,47 @@
 import com.example.sprout.refactor.model.entity.Account;
 import com.example.sprout.refactor.repository.RegistrationRepository;
 
-import io.reactivex.Observable;
 import io.reactivex.schedulers.Schedulers;
-import io.reactivex.subjects.BehaviorSubject;
-import io.reactivex.subjects.Subject;
 
 /**
  * Accountを管理するクラス
  * Created by matsumoto_k on 2017/12/14.
  */
 
-public class RegistrationModel {
+public class RegistrationModel extends BaseModel<Account, Account> {
 
-    private final Subject<Account> accountSubject = BehaviorSubject.<Account>create().toSerialized();
-    private final Subject<Throwable> errorSubject = BehaviorSubject.<Throwable>create().toSerialized();
     private RegistrationRepository registrationRepository = null;
 
     public RegistrationModel(RegistrationRepository registrationRepository) {
         this.registrationRepository = registrationRepository;
     }
 
-    public void registration(String userName) {
-        registrationRepository.registration(userName)
+    @Override
+    public void create(Account account) {
+        registrationRepository.registration(account.getUserName())
                 .subscribeOn(Schedulers.computation())
                 .subscribe(
-                        account -> accountSubject.onNext(account),
+                        response -> entitySubject.onNext(response),
                         error -> errorSubject.onNext(error)
                 );
     }
 
-    public void get(int userId) {
-        registrationRepository.getAccount(userId)
+    @Override
+    public void read(Account account) {
+        registrationRepository.getAccount(account.getUserID())
                 .subscribeOn(Schedulers.computation())
                 .subscribe(
-                        account -> accountSubject.onNext(account),
+                        response -> entitySubject.onNext(account),
                         error -> errorSubject.onNext(error)
                 );
     }
 
-    public Observable<Account> getAccountObservable() {
-        return accountSubject.hide();
+    @Override
+    public void update(Account account) {
     }
 
-    public Observable<Throwable> getErrorSubject() {
-        return errorSubject.hide();
+    @Override
+    public void delete(Account account) {
+
     }
 }
diff --git a/app/src/main/java/com/example/sprout/refactor/viewmodel/RegistrationViewModel.java b/app/src/main/java/com/example/sprout/refactor/viewmodel/RegistrationViewModel.java
index 156a2e5..1a367c0 100644
--- a/app/src/main/java/com/example/sprout/refactor/viewmodel/RegistrationViewModel.java
+++ b/app/src/main/java/com/example/sprout/refactor/viewmodel/RegistrationViewModel.java
@@ -44,7 +44,7 @@
     public void onResume() {
         super.onResume();
         subscriptions.add(
-                registrationModel.getAccountObservable()
+                registrationModel.getEntityObservable()
                         .observeOn(AndroidSchedulers.mainThread())
                         .subscribe(account -> {
                                     preferenceUtil.saveInt(PreferenceUtil.Key.USER_ID, account.getUserID());
@@ -56,7 +56,7 @@
                         )
         );
         subscriptions.add(
-                registrationModel.getErrorSubject()
+                registrationModel.getErrorObservable()
                         .observeOn(AndroidSchedulers.mainThread())
                         .subscribe(error -> {
                             toastMessanger.showToast(new ToastMessage(Sprout.get().getResources().getString(R.string.fail_registration), ToastMessage.Length.LONG));
@@ -80,7 +80,9 @@
             toastMessanger.showToast(new ToastMessage(Sprout.get().getResources().getString(R.string.empty_name), ToastMessage.Length.SHORT));
             return;
         }
-        registrationModel.registration(userName);
+        Account params = new Account();
+        params.setUserName(userName);
+        registrationModel.create(params);
 
     }