diff --git a/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java b/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java
index 2efc968..c198b52 100644
--- a/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java
+++ b/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java
@@ -17,7 +17,8 @@
 @Path("/gallery")
 public class StrokesRest {
     private final Gallery gallery = Gallery.getInstance();
-
+    private int srstrokeSize=0;
+    private int srstrokeNo=0;
     // _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
     // 1ページの１レイヤーに置ける筆跡情報を全て取得します
     // 成功時のレスポンス：strokeNo{pen, color, thickness, potions{x, y}}
@@ -173,14 +174,18 @@
 
         Position position = new Position();
         position.setXY(positionNo, x, y);
-
-        for(int i = 0; i < strokes.size(); i++){
-            if(strokes.get(i).getStrokeNo()==strokeNo)
-            {
-                strokes.get(i).addPosition(position);
+        if(srstrokeNo==strokeNo){
+            strokes.get(srstrokeSize).addPosition(position);
+        }else {
+            for(int i = 0; i < strokes.size(); i++){
+                if(strokes.get(i).getStrokeNo()==strokeNo)
+                {
+                    srstrokeNo=strokes.get(i).getStrokeNo();
+                    srstrokeSize=i;
+                    strokes.get(i).addPosition(position);
+                }
             }
         }
-
      //   strokes.get(strokeNo).addPosition(position);          // 呼び出したstrokesに座標を追加する
 //        if(animation != null) {
 //////            this.Position.setXY(x, y);