diff --git a/app/src/main/java/com/example/cosmosclient/views/MemberListActivity.java b/app/src/main/java/com/example/cosmosclient/views/MemberListActivity.java
index ad97c66..242c8f4 100644
--- a/app/src/main/java/com/example/cosmosclient/views/MemberListActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/MemberListActivity.java
@@ -5,6 +5,7 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
+import android.os.Handler;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
@@ -48,10 +49,18 @@
         TextView groupName = findViewById(R.id.groupName);
 
         //メンバー追加ボタン処理
-        FloatingActionButton fab = findViewById(R.id.addrequest_button);
+        final FloatingActionButton fab = findViewById(R.id.addrequest_button);
         fab.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
+                //ボタン連打防止
+                fab.setEnabled(false);
+                new Handler().postDelayed(new Runnable() {
+                    public void run() {
+                        fab.setEnabled(true);
+                    }
+                }, 1000L);
+
                 startActivity(new Intent(MemberListActivity.this,
                         AddMemberActivity.class));
                 finish();