diff --git a/backend/src/main/java/com/example/todoapp/dto/ToBuysBuyDTO.java b/backend/src/main/java/com/example/todoapp/dto/ToBuysBuyDTO.java
index 664a01c..89a0fc1 100644
--- a/backend/src/main/java/com/example/todoapp/dto/ToBuysBuyDTO.java
+++ b/backend/src/main/java/com/example/todoapp/dto/ToBuysBuyDTO.java
@@ -1,5 +1,7 @@
 package com.example.todoapp.dto;
 
+import java.time.LocalDate;
+
 import lombok.Data;
 /**
  * カテゴリDTOクラス
@@ -10,9 +12,9 @@ import lombok.Data;
 
  @Data
  public class ToBuysBuyDTO {
-    private Long stuff_id;
-    private int amount;
-    private String shop;
-    private String stuff_name; 
-    private String category;
+    private int stuff_id;
+    private int price;
+    private LocalDate exp_date;
+    private LocalDate last_update;
+    private LocalDate buy_date;
  }
\ No newline at end of file
diff --git a/backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java b/backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java
index 90830fd..fe6db25 100644
--- a/backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java
+++ b/backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java
@@ -1,6 +1,9 @@
 package com.example.todoapp.dto;
 
+import java.time.LocalDate;
+
 import lombok.Data;
+
 /**
  * カテゴリDTOクラス
  * このクラスはタスクのカテゴリ情報を表します。
@@ -8,14 +11,17 @@ import lombok.Data;
  * 
  */
 
- @Data
- public class ToBuysDTO {
-    private Long  stuff_id;
-    private Long  user_id;
-
-    private int amount;
-    private String shop;
-
-    private String stuff_name; 
-    private String category;   
- }
\ No newline at end of file
+@Data
+public class ToBuysDTO {
+   private int tobuy_id;
+   private Long stuff_id;
+   private Long user_id;
+   private int price;
+   private int amount;
+   private String shop;
+   private String stuff_name;
+   private String category;
+   private LocalDate exp_date;
+   private LocalDate last_update;
+   private LocalDate buy_date;
+}
\ No newline at end of file
diff --git a/backend/src/main/java/com/example/todoapp/model/Stocks.java b/backend/src/main/java/com/example/todoapp/model/Stocks.java
index d9f3f42..fb1b84b 100644
--- a/backend/src/main/java/com/example/todoapp/model/Stocks.java
+++ b/backend/src/main/java/com/example/todoapp/model/Stocks.java
@@ -52,7 +52,7 @@ public class Stocks {
          referencedColumnName = "stuff_id",
          nullable = false
      )
-     private Stuffs stuffs;
+     private Long stuff_id;
 
 
     /**
diff --git a/backend/src/main/java/com/example/todoapp/service/ToBuysService.java b/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
index fd4d50e..2484ecf 100644
--- a/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
+++ b/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
@@ -164,19 +164,19 @@ public class ToBuysService {
         return toBuysRepository.deleteByUserIdAndTobuyId(userId, tobuyId);
     }
 
-    public Stocks buyToBuys(String username, ToBuysBuyDTO dto) {
+    public Stocks buyToBuys(String username, ToBuysDTO dto) {
         // ユーザー情報を取得
         User user = getUserByUsername(username);
         // 新しい在庫を作成
         Stocks stock = new Stocks();
-        stock.setStuffs(dto.getStuff_id());
+        stock.setStuff_id(dto.getStuff_id());
         stock.setUser_id(user);
         stock.setAmount(dto.getAmount());
         stock.setPrice(dto.getPrice());
         stock.setLast_update(dto.getLast_update());
         stock.setBuy_date(dto.getBuy_date());
         stock.setExp_date(dto.getExp_date());
-        deleteToBuys(toBuyDTO);
+        deleteToBuyByIds(dto.getUser_id(), dto.getTobuy_id());
         // データベースに保存
         return stockRepository.save(stock);
     }