diff --git a/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java b/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
index e1d07d5..a4010c5 100644
--- a/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
+++ b/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
@@ -75,12 +75,35 @@
             }
         });
 
+        TextView textPenSize =(TextView)findViewById(R.id.penSizeText);
+        TextView textAlpha =(TextView)findViewById(R.id.alphaText);
+        textPenSize.setText("サイズ: 10%");
+        textAlpha.setText("透明度: 255%");
         //筆の大きさを変えるシークバー
         SeekBar seekbar = findViewById(R.id.seekBar);
         seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
             @Override
             public void onProgressChanged(SeekBar seekBar, int i, boolean b) {//変更中
                 drawingCanvas.setPenWidth(i);
+                textPenSize.setText("サイズ: "+ i + "%");
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {//変更開始時
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {//変更終了時
+            }
+        });
+
+        //筆の透明度を変えるシークバー
+        SeekBar seekbar2 = findViewById(R.id.seekBar2);
+        seekbar2.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {//変更中
+                drawingCanvas.setAlpha(i);
+                textAlpha.setText("透明度: "+ i + "%");
             }
 
             @Override
@@ -100,9 +123,9 @@
         drawingCanvas = (DrawingCanvas) findViewById(R.id.drawingCanvas);
 
         //残りのイラスト枚数の表示
-        drawingNum = 16 / 2; // 一人あたりが描く枚数(テスト部屋用，部屋作成からスタートする場合はこの行をコメントアウトして ↓ ふたつのコメントを解除)
-        //drawingNum = 16 / memberList.size(); // 一人あたりが描く枚数
-        //if (16 % memberList.size() != 0) drawingNum++; // 余りが出た場合プラス1枚
+        //drawingNum = 16 / 2; // 一人あたりが描く枚数(テスト部屋用，部屋作成からスタートする場合はこの行をコメントアウトして ↓ ふたつのコメントを解除)
+        drawingNum = 16 / memberList.size(); // 一人あたりが描く枚数
+        if (16 % memberList.size() != 0) drawingNum++; // 余りが出た場合プラス1枚
 
         //getKeywords
         drawingStateViewModel.getKeywords().observe(this, new Observer<List<String>>(){
diff --git a/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java b/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java
index caa7bcf..a5e7a4d 100644
--- a/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java
+++ b/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java
@@ -104,6 +104,11 @@
         paint.setColor(color);
     }
 
+    //筆の透明度を変更
+    public void setAlpha(int alpha){
+        paint.setAlpha(alpha);
+    }
+
     //筆の幅を変更
     public void setPenWidth(int size){
         paint.setStrokeWidth(size);
diff --git a/app/src/main/res/layout/activity_drawing.xml b/app/src/main/res/layout/activity_drawing.xml
index 16de9e8..42d07cf 100644
--- a/app/src/main/res/layout/activity_drawing.xml
+++ b/app/src/main/res/layout/activity_drawing.xml
@@ -36,12 +36,12 @@
         android:gravity="center_horizontal"
         android:text="test"
         android:textSize="25sp"
-        app:layout_constraintBottom_toTopOf="@+id/seekBar"
+        app:layout_constraintBottom_toTopOf="@+id/drawingCanvas"
         app:layout_constraintEnd_toStartOf="@+id/drawingCanvas"
-        app:layout_constraintHorizontal_bias="0.522"
+        app:layout_constraintHorizontal_bias="0.558"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.168" />
+        app:layout_constraintVertical_bias="0.84" />
 
     <TextView
         android:id="@+id/timerText"
@@ -100,16 +100,17 @@
 
     <SeekBar
         android:id="@+id/seekBar"
-        android:layout_width="175dp"
-        android:layout_height="56dp"
-        android:max="120"
+        android:layout_width="170dp"
+        android:layout_height="50dp"
+        android:max="100"
         android:min="10"
+        android:progress="10"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/drawingCanvas"
-        app:layout_constraintHorizontal_bias="0.482"
+        app:layout_constraintHorizontal_bias="1.0"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.681" />
+        app:layout_constraintVertical_bias="0.578" />
 
     <ImageButton
         android:id="@+id/blackPenButton"
@@ -118,9 +119,10 @@
         android:scaleType="fitXY"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/eraserButton"
+        app:layout_constraintHorizontal_bias="0.516"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.314"
+        app:layout_constraintTop_toBottomOf="@+id/drawingNowText"
+        app:layout_constraintVertical_bias="0.035"
         app:srcCompat="@drawable/pen" />
 
     <ImageButton
@@ -131,9 +133,45 @@
         android:scaleType="fitXY"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/drawingCanvas"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.314"
+        app:layout_constraintTop_toBottomOf="@+id/drawingNowText"
+        app:layout_constraintVertical_bias="0.035"
         app:srcCompat="@drawable/eraser" />
 
+    <SeekBar
+        android:id="@+id/seekBar2"
+        android:layout_width="170dp"
+        android:layout_height="50dp"
+        android:max="255"
+        android:min="10"
+        android:progress="255"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/drawingCanvas"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/seekBar"
+        app:layout_constraintVertical_bias="0.156" />
+
+    <TextView
+        android:id="@+id/penSizeText"
+        android:layout_width="60dp"
+        android:layout_height="50dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/seekBar"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.578" />
+
+    <TextView
+        android:id="@+id/alphaText"
+        android:layout_width="60dp"
+        android:layout_height="50dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/seekBar2"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.761" />
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file