diff --git a/app/src/main/java/com/example/sprout/refactor/adapter/DiffCallback.java b/app/src/main/java/com/example/sprout/refactor/adapter/DiffCallback.java
new file mode 100644
index 0000000..aa637c3
--- /dev/null
+++ b/app/src/main/java/com/example/sprout/refactor/adapter/DiffCallback.java
@@ -0,0 +1,38 @@
+package com.example.sprout.refactor.adapter;
+
+import android.support.v7.util.DiffUtil;
+
+import java.util.List;
+
+/**
+ * DiffUtilのCallbackの基底クラス
+ *
+ * @param <T> 差分を出すクラス
+ * @author matsumoto_k
+ */
+public abstract class DiffCallback<T> extends DiffUtil.Callback {
+    final protected List<T> oldList;
+    final protected List<T> newList;
+
+    public DiffCallback(List<T> oldList, List<T> newList) {
+        this.oldList = oldList;
+        this.newList = newList;
+    }
+
+    @Override
+    public int getOldListSize() {
+        return oldList.size();
+    }
+
+    @Override
+    public int getNewListSize() {
+        return newList.size();
+    }
+
+    @Override
+    public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
+        return oldList.get(oldItemPosition) == newList.get(newItemPosition);
+    }
+
+    public abstract Object getChangePayload(int oldItemPosition, int newItemPosition);
+}
diff --git a/app/src/main/java/com/example/sprout/refactor/adapter/MemberDiffCallBack.java b/app/src/main/java/com/example/sprout/refactor/adapter/MemberDiffCallBack.java
new file mode 100644
index 0000000..77b1c9d
--- /dev/null
+++ b/app/src/main/java/com/example/sprout/refactor/adapter/MemberDiffCallBack.java
@@ -0,0 +1,26 @@
+package com.example.sprout.refactor.adapter;
+
+import com.example.sprout.refactor.model.entity.Member;
+
+import java.util.List;
+
+/**
+ * userIdからMemberの差分を出す
+ *
+ * @author matsumoto_k
+ */
+public class MemberDiffCallBack extends DiffCallback<Member> {
+    public MemberDiffCallBack(List<Member> oldList, List<Member> newList) {
+        super(oldList, newList);
+    }
+
+    @Override
+    public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
+        return oldList.get(oldItemPosition).getUserId() == newList.get(newItemPosition).getUserId();
+    }
+
+    @Override
+    public Object getChangePayload(int oldItemPosition, int newItemPosition) {
+        return null;
+    }
+}
diff --git a/app/src/main/java/com/example/sprout/refactor/adapter/RoomDiffCallBack.java b/app/src/main/java/com/example/sprout/refactor/adapter/RoomDiffCallBack.java
new file mode 100644
index 0000000..47c8450
--- /dev/null
+++ b/app/src/main/java/com/example/sprout/refactor/adapter/RoomDiffCallBack.java
@@ -0,0 +1,27 @@
+package com.example.sprout.refactor.adapter;
+
+import com.example.sprout.refactor.model.entity.Room;
+
+import java.util.List;
+
+/**
+ * roomIdからRoomの差分を出す
+ *
+ * @author matsumoto_k
+ */
+public class RoomDiffCallBack extends DiffCallback<Room> {
+
+    public RoomDiffCallBack(List<Room> oldList, List<Room> newList) {
+        super(oldList, newList);
+    }
+
+    @Override
+    public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
+        return oldList.get(oldItemPosition).getRoomId() == newList.get(newItemPosition).getRoomId();
+    }
+
+    @Override
+    public Object getChangePayload(int oldItemPosition, int newItemPosition) {
+        return null;
+    }
+}
diff --git a/app/src/main/java/com/example/sprout/refactor/adapter/RoomListAdapter.java b/app/src/main/java/com/example/sprout/refactor/adapter/RoomListAdapter.java
index 0297ee7..9318aa0 100644
--- a/app/src/main/java/com/example/sprout/refactor/adapter/RoomListAdapter.java
+++ b/app/src/main/java/com/example/sprout/refactor/adapter/RoomListAdapter.java
@@ -2,6 +2,7 @@
 
 import android.content.Context;
 import android.databinding.DataBindingUtil;
+import android.support.v7.util.DiffUtil;
 import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
@@ -11,6 +12,7 @@
 import com.example.sprout.refactor.model.entity.Room;
 
 import java.util.ArrayList;
+import java.util.List;
 
 /**
  * ルーム一覧のアダプター
@@ -48,9 +50,10 @@
     }
 
     public void setDataAndRefresh(ArrayList<Room> items) {
-        this.items.clear();
-        this.items.addAll(items);
-        notifyDataSetChanged();
+        List<Room> oldItems = this.items;
+        DiffUtil.DiffResult diffResult = DiffUtil.calculateDiff(new RoomDiffCallBack(oldItems, items));
+        this.items = items;
+        diffResult.dispatchUpdatesTo(this);
     }
 
     @Override
diff --git a/app/src/main/java/com/example/sprout/refactor/adapter/RoomMainAdapter.java b/app/src/main/java/com/example/sprout/refactor/adapter/RoomMainAdapter.java
index 3b26d7a..837a948 100644
--- a/app/src/main/java/com/example/sprout/refactor/adapter/RoomMainAdapter.java
+++ b/app/src/main/java/com/example/sprout/refactor/adapter/RoomMainAdapter.java
@@ -1,11 +1,8 @@
 package com.example.sprout.refactor.adapter;
 
-/**
- * Created by matsumoto_k on 2017/11/29.
- */
-
 import android.content.Context;
 import android.databinding.DataBindingUtil;
+import android.support.v7.util.DiffUtil;
 import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
@@ -15,6 +12,7 @@
 import com.example.sprout.refactor.model.entity.Member;
 
 import java.util.ArrayList;
+import java.util.List;
 
 /**
  * ルームのアダプター
@@ -48,9 +46,10 @@
     }
 
     public void setDataAndRefresh(ArrayList<Member> items) {
-        this.items.clear();
-        this.items.addAll(items);
-        notifyDataSetChanged();
+        List<Member> oldItems = this.items;
+        DiffUtil.DiffResult diffResult = DiffUtil.calculateDiff(new MemberDiffCallBack(oldItems, items));
+        this.items = items;
+        diffResult.dispatchUpdatesTo(this);
     }
 
     @Override