diff --git a/src/main/java/com/ntlab/irisserver/entities/Drawing.java b/src/main/java/com/ntlab/irisserver/entities/Drawing.java
index bd51375..5710844 100644
--- a/src/main/java/com/ntlab/irisserver/entities/Drawing.java
+++ b/src/main/java/com/ntlab/irisserver/entities/Drawing.java
@@ -13,7 +13,7 @@
     // 作者名
     @JsonProperty("member")
     private String member;
-
+    // 絵のデータ
     @JsonProperty("drawing")
     private String drawing;
 
diff --git a/src/main/java/com/ntlab/irisserver/utils/Base64Decode.java b/src/main/java/com/ntlab/irisserver/utils/Base64Decode.java
new file mode 100644
index 0000000..2e4a135
--- /dev/null
+++ b/src/main/java/com/ntlab/irisserver/utils/Base64Decode.java
@@ -0,0 +1,40 @@
+package com.ntlab.irisserver.utils;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Base64;
+
+public class Base64Decode {
+    public static String saveAsFile(String rid ,Integer dno ,String path1 ,String enimage) throws IOException {
+
+        //デコードを行う
+        byte[] dedata = Base64.getDecoder().decode(enimage);
+
+        //ファイルがないときは作成する
+        String fileName = "r" + rid + "d" + dno.toString() + ".png";
+        String path2 = "/gallery/"+ rid + "/"+ dno.toString();
+        String path = path1 + path2 + "/" + fileName;
+
+        System.out.println(path.toString());
+
+        File file = new File(path);
+        System.out.println("1" + path.toString());
+        file.getParentFile().mkdirs();
+        System.out.println("2"+ path.toString());
+        file.createNewFile();
+        System.out.println("3 koregarogu" + path.toString());
+
+        //ファイルに画像データを書き込む
+        FileOutputStream file1 = new FileOutputStream(file, false);
+        BufferedOutputStream bf = new BufferedOutputStream(file1);
+        bf.write(dedata, 0, dedata.length);
+
+        //ファイルを閉じる
+        bf.close();
+
+        //セーブしたファイルの相対パスを文字列として返す
+        return path;
+    }
+}
diff --git a/src/main/java/utils/Base64Decode.java b/src/main/java/utils/Base64Decode.java
deleted file mode 100644
index a300629..0000000
--- a/src/main/java/utils/Base64Decode.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package utils;
-
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.util.Base64;
-
-public class Base64Decode {
-}