diff --git a/app/src/main/res/layout/activity_set_up.xml b/app/src/main/res/layout/activity_set_up.xml
index d693ab8..966ccbc 100644
--- a/app/src/main/res/layout/activity_set_up.xml
+++ b/app/src/main/res/layout/activity_set_up.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
@@ -23,9 +22,10 @@
         android:id="@+id/toMain"
         android:layout_width="60dp"
         android:layout_height="60dp"
-        android:layout_gravity="left"
-        android:layout_marginLeft="10dp"
-        android:src="@drawable/back_button"/>
+        android:layout_gravity="start"
+        android:layout_marginStart="10dp"
+        android:src="@drawable/back_button"
+        android:contentDescription="@string/todo" />
 
 
     <TextView
@@ -91,7 +91,7 @@
         <TextView
             android:layout_width="90sp"
             android:layout_height="wrap_content"
-            android:text="日付設定"
+            android:text="@string/setUpDate"
             android:gravity="center"/>
 
 <!--        <TextView-->
@@ -109,7 +109,7 @@
             android:id="@+id/setFirstDayButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="1日目"
+            android:text="@string/firstDay"
             android:layout_marginStart="7sp"
             android:layout_marginEnd="7sp"
             tools:ignore="DuplicateIds" />
@@ -118,7 +118,7 @@
             android:id="@+id/setSecondDayButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="2日目"
+            android:text="@string/secondDay"
             android:layout_marginStart="7sp"
             android:layout_marginEnd="7sp"
             tools:ignore="DuplicateIds" />
@@ -127,7 +127,7 @@
             android:id="@+id/setThirdDayButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="3日目"
+            android:text="@string/threeDay"
             android:layout_marginStart="7sp"
             android:layout_marginEnd="7sp"
             tools:ignore="DuplicateIds" />
@@ -151,7 +151,7 @@
             android:id="@+id/startTime"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:hint="未設定"
+            android:hint="@string/notSetUp"
             android:textSize="20sp"
             android:textAlignment="center"
             android:autofillHints=""
@@ -186,7 +186,7 @@
             android:id="@+id/endTime"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:hint="未設定"
+            android:hint="@string/notSetUp"
             android:textSize="20sp"
             android:textAlignment="center"
             android:autofillHints=""
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 588fadf..639e09a 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -16,6 +16,12 @@
     <string name="tenMinute">10分</string>
     <string name="fifteenMinute">15分</string>
     <string name="thirtyMinute">30分</string>
+    <string name="todo">TODO</string>
+    <string name="setUpDate">日付設定</string>
+    <string name="firstDay">1日目</string>
+    <string name="secondDay">2日目</string>
+    <string name="threeDay">3日目</string>
+    <string name="notSetUp">未設定</string>
     <string-array name="months_array">
         <item>1月</item>
         <item>2月</item>