diff --git a/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java b/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java
index ca72bf5..196f8a8 100644
--- a/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java
+++ b/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java
@@ -32,7 +32,7 @@ import org.springframework.web.bind.annotation.*;
 /**
  * 購入リストに関するRESTコントローラー
  * <p>
- * このコントローラーは、購入リスト (to_buys) へのアイテム追加機能を提供します。
+ * このコントローラーは、購入リスト (toBuys) へのアイテム追加機能を提供します。
  * リクエストボディには ToBuyDTO 形式のデータが期待されます。
  * </p>
  */
@@ -99,7 +99,7 @@ public class ToBuysController {
                 Stuffs stuff = toBuy.getStuff();
                 resp.setTobuyId(toBuy.getTobuyId());
                 resp.setStuffId(stuff.getStuffId());
-                resp.setStuff_name(stuff.getStuffName());
+                resp.setStuffName(stuff.getStuffName());
                 resp.setAmount(toBuy.getAmount());
                 resp.setShop(toBuy.getStore());
                 return resp;
diff --git a/backend/src/main/java/com/example/todoapp/dto/ToBuyResponse.java b/backend/src/main/java/com/example/todoapp/dto/ToBuyResponse.java
index 8d1a992..e4a677a 100644
--- a/backend/src/main/java/com/example/todoapp/dto/ToBuyResponse.java
+++ b/backend/src/main/java/com/example/todoapp/dto/ToBuyResponse.java
@@ -6,7 +6,7 @@ import lombok.Data;
 public class ToBuyResponse {
     private int tobuyId;
     private Long stuffId;
-    private String stuff_name;
+    private String stuffName;
     private int amount;
     private String shop;
 }
\ 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 1bdee7f..111ccad 100644
--- a/backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java
+++ b/backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java
@@ -19,9 +19,9 @@ public class ToBuysDTO {
    private int price;
    private int amount;
    private String shop;
-   private String stuff_name;
+   private String stuffName;
    private String category;
-   private LocalDate exp_date;
-   private LocalDate last_update;
-   private LocalDate buy_date;
+   private LocalDate expDate;
+   private LocalDate lastUpdate;
+   private LocalDate buyDate;
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/example/todoapp/model/RecipeStuffs.java b/backend/src/main/java/com/example/todoapp/model/RecipeStuffs.java
index 0d911ef..efd9017 100644
--- a/backend/src/main/java/com/example/todoapp/model/RecipeStuffs.java
+++ b/backend/src/main/java/com/example/todoapp/model/RecipeStuffs.java
@@ -46,8 +46,8 @@ public class RecipeStuffs {
     @NotBlank 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(
-        name = "recipe_id",              
-        referencedColumnName = "recipe_id", 
+        name = "recipeId",              
+        referencedColumnName = "recipeId", 
         nullable = false                
     )
     private Recipes recipes;               
@@ -59,8 +59,8 @@ public class RecipeStuffs {
     @NotBlank 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(
-        name = "stuff_id",              
-        referencedColumnName = "stuff_id", 
+        name = "stuffId",              
+        referencedColumnName = "stuffId", 
         nullable = false                
     )
     private Stuffs stuff;              
diff --git a/backend/src/main/java/com/example/todoapp/model/Recipes.java b/backend/src/main/java/com/example/todoapp/model/Recipes.java
index cdaa809..25eaaad 100644
--- a/backend/src/main/java/com/example/todoapp/model/Recipes.java
+++ b/backend/src/main/java/com/example/todoapp/model/Recipes.java
@@ -35,14 +35,14 @@ public class Recipes {
      */
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name="recipe_id")
+    @Column(name="recipeId")
     private int recipeId ;
 
     /**
     * カテゴリ名
     */
     @NotNull
-    @Column(name="recipe_name", unique = true, length = 255, nullable = false)
+    @Column(name="recipeName", unique = true, length = 255, nullable = false)
     private String recipieName;
 
     /**
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 398cf2b..8c7eca6 100644
--- a/backend/src/main/java/com/example/todoapp/model/Stocks.java
+++ b/backend/src/main/java/com/example/todoapp/model/Stocks.java
@@ -39,7 +39,7 @@ public class Stocks {
      */
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name="stock_id")
+    @Column(name="stockId")
     private Long stockId ;
 
 
@@ -49,8 +49,8 @@ public class Stocks {
      @NotNull
      @ManyToOne(fetch = FetchType.LAZY)
      @JoinColumn(
-         name = "stuff_id",
-         referencedColumnName = "stuff_id",
+         name = "stuffId",
+         referencedColumnName = "stuffId",
          nullable = false
      )
      private Stuffs stuff;
@@ -62,7 +62,7 @@ public class Stocks {
      @NotNull
      @ManyToOne(fetch = FetchType.LAZY)
      @JoinColumn(
-         name = "user_id",
+         name = "userId",
          referencedColumnName = "id",
          nullable = false
      )
@@ -84,18 +84,18 @@ public class Stocks {
      * 購入日
      */
     @Column(nullable = false)
-    private LocalDate buy_date;
+    private LocalDate buyDate;
 
     /**
      * 最後の操作時間
      */
     @Column(nullable = false)
-    private LocalDate last_update;
+    private LocalDate lastUpdate;
 
     /**
      * 賞味期限
      */
     @Column(nullable = false)
-    private LocalDate exp_date;
+    private LocalDate expDate;
 
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/example/todoapp/model/Stuffs.java b/backend/src/main/java/com/example/todoapp/model/Stuffs.java
index 2b164ad..14fb111 100644
--- a/backend/src/main/java/com/example/todoapp/model/Stuffs.java
+++ b/backend/src/main/java/com/example/todoapp/model/Stuffs.java
@@ -35,14 +35,14 @@ import lombok.NoArgsConstructor;
      */
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name = "stuff_id")
+    @Column(name = "stuffId")
     private Long stuffId;
 
     /**
     * カテゴリ名
     */
     @NotNull
-    @Column(name = "stuff_name", unique = true, length = 255, nullable = false)
+    @Column(name = "stuffName", unique = true, length = 255, nullable = false)
     private String stuffName;
 
     /**
diff --git a/backend/src/main/java/com/example/todoapp/model/ToBuys.java b/backend/src/main/java/com/example/todoapp/model/ToBuys.java
index d02faa4..e000516 100644
--- a/backend/src/main/java/com/example/todoapp/model/ToBuys.java
+++ b/backend/src/main/java/com/example/todoapp/model/ToBuys.java
@@ -28,7 +28,7 @@ import lombok.NoArgsConstructor;
 @Data
 @NoArgsConstructor
 @Entity
-@Table(name = "to_buys")
+@Table(name = "toBuys")
 public class ToBuys {
 
     /**
@@ -36,7 +36,7 @@ public class ToBuys {
      */
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name = "tobuy_id")
+    @Column(name = "tobuyId")
     private int tobuyId ;
 
     /**
@@ -45,8 +45,8 @@ public class ToBuys {
     @NotNull 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(
-        name = "stuff_id",              
-        referencedColumnName = "stuff_id", 
+        name = "stuffId",              
+        referencedColumnName = "stuffId", 
         nullable = false                
     )
     private Stuffs stuff;   
@@ -61,7 +61,7 @@ public class ToBuys {
      * 多対一の関係で、遅延ロードを使用
      */
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "user_id", nullable = false)
+    @JoinColumn(name = "userId", nullable = false)
     private User user;
 
     /**
diff --git a/backend/src/main/java/com/example/todoapp/repository/StocksRepository.java b/backend/src/main/java/com/example/todoapp/repository/StocksRepository.java
index 3fd0855..35b2dd4 100644
--- a/backend/src/main/java/com/example/todoapp/repository/StocksRepository.java
+++ b/backend/src/main/java/com/example/todoapp/repository/StocksRepository.java
@@ -8,7 +8,13 @@
 package com.example.todoapp.repository;
 
 import com.example.todoapp.model.Stocks;
+
+import jakarta.transaction.Transactional;
+
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
@@ -24,12 +30,12 @@ import java.util.List;
 @Repository
 public interface StocksRepository extends JpaRepository<Stocks, Long> {    
     /**
-     * user_idから在庫一覧をstock_id順で取得する
+     * userIdから在庫一覧をstockId順で取得する
      *
-     * @param user_id 検索するユーザーID
+     * @param userId 検索するユーザーID
      * @return 在庫リスト
      */
-    List<Stocks> findStocksByUser_id(Long user_id);
+    List<Stocks> findStocksByUserId(Long userId);
 
     /**
      * 在庫情報を更新する
@@ -37,14 +43,20 @@ public interface StocksRepository extends JpaRepository<Stocks, Long> {
      * @param stock 編集する新たな情報が入ったstockオブジェクト
      * @return 編集に成功したらtrue
      */
-    boolean UpdateStockByStock_id(Stocks stock);
+    // boolean updateStocksByStockId(Stocks stock);
+    
+    //updateをクエリ作成にて実装
+     
+    @Modifying
+    @Transactional
+    @Query("UPDATE Stocks s SET s.amount = :#{#stock.amount}, s.price = :#{#stock.price}, s.buyDate = :#{#stock.buyDate}, s.lastUpdate = :#{#stock.lastUpdate}, s.expDate = :#{#stock.expDate} WHERE s.stockId = :#{#stock.stockId}")
+    int updateStocksById(@Param("stock") Stocks stock);
 
     /**
      * 在庫リストから指定した食材を削除する
      * 
      * @param stockId 削除する在庫
      * @param userId 削除するユーザー
-     * @return 削除した場合true
      */
-    boolean DeleteStockByStock_id(int stockId, Long userId);
+    void deleteStocksByStockIdAndUserId(Long stockId, Long userId);
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/example/todoapp/repository/StuffsRepository.java b/backend/src/main/java/com/example/todoapp/repository/StuffsRepository.java
index 82d3137..6edbc88 100644
--- a/backend/src/main/java/com/example/todoapp/repository/StuffsRepository.java
+++ b/backend/src/main/java/com/example/todoapp/repository/StuffsRepository.java
@@ -24,6 +24,6 @@ import org.springframework.stereotype.Repository;
 @Repository
 public interface StuffsRepository extends JpaRepository<Stuffs, Long> {
     // 材料情報を主キーで取得するメソッド（必要に応じて追加）
-    Stuffs findByStuffId(Long stuff_id);
+    Stuffs findByStuffId(Long stuffId);
 
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/example/todoapp/repository/ToBuysRepository.java b/backend/src/main/java/com/example/todoapp/repository/ToBuysRepository.java
index 89f0d7d..c208db9 100644
--- a/backend/src/main/java/com/example/todoapp/repository/ToBuysRepository.java
+++ b/backend/src/main/java/com/example/todoapp/repository/ToBuysRepository.java
@@ -18,9 +18,9 @@ import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 /**
- * to_buys テーブルへのアクセスを行うリポジトリ
+ * toBuys テーブルへのアクセスを行うリポジトリ
  * <p>
- * このクラスは to_buys テーブルに対する基本的なCRUD操作を提供します。
+ * このクラスは toBuys テーブルに対する基本的なCRUD操作を提供します。
  * Spring Data JPAによって自動的に実装されます。
  * </p>
  */
@@ -34,7 +34,7 @@ public interface ToBuysRepository extends JpaRepository<ToBuys, Integer> {
      * @return 「買うもの」リスト
      */
     @Query("SELECT t FROM ToBuys t WHERE t.user.id = ?1")
-    List<ToBuys> findByUser(Long user_id);
+    List<ToBuys> findByUser(Long userId);
 
     /**
      * 指定されたユーザーIDに基づいて「買うもの」リストを取得する
@@ -45,5 +45,5 @@ public interface ToBuysRepository extends JpaRepository<ToBuys, Integer> {
      */
     @Modifying
     @Query("DELETE FROM ToBuys t WHERE t.user.id = :userId AND t.tobuyId = :tobuyId")
-    int deleteByUser_IdAndTobuyId(@Param("userId") Long userId, @Param("tobuyId") int tobuyId);
+    int deleteByUserIdAndTobuyId(@Param("userId") Long userId, @Param("tobuyId") int tobuyId);
 }
\ No newline at end of file
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 0d91e1f..41847d9 100644
--- a/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
+++ b/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
@@ -33,7 +33,7 @@ import java.util.Optional;
 /**
  * 購入リストのサービスクラス
  * <p>
- * このクラスは、購入リスト (to_buys) の登録処理を提供します。
+ * このクラスは、購入リスト (toBuys) の登録処理を提供します。
  * 材料 (stuffs) の存在確認と新規作成、ユーザー情報の取得などを行います。
  * </p>
  */
@@ -73,7 +73,7 @@ public class ToBuysService {
         if (toBuyDTO.getStuffId() == null) {
             // 新しい材料を作成
             stuff = new Stuffs();
-            stuff.setStuffName(toBuyDTO.getStuff_name());
+            stuff.setStuffName(toBuyDTO.getStuffName());
             stuff.setCategory(toBuyDTO.getCategory());
             stuff = stuffsRepository.save(stuff); 
         } else {
@@ -112,7 +112,7 @@ public class ToBuysService {
         if (toBuyDTO.getStuffId() == null) {
             // 新しい材料を作成
             stuffs = new Stuffs();
-            stuffs.setStuffName(toBuyDTO.getStuff_name());
+            stuffs.setStuffName(toBuyDTO.getStuffName());
             stuffs.setCategory(toBuyDTO.getCategory());
             stuffs = stuffsRepository.save(stuffs); 
         } else {
@@ -124,7 +124,7 @@ public class ToBuysService {
             stuffs = optionalStuffs.get();    
             
             //update
-            // stuffs.setStuff_name(toBuyDTO.getStuff_name());
+            // stuffs.setStuffName(toBuyDTO.getStuffName());
             // stuffs.setCategory(toBuyDTO.getCategory());
             stuffs = stuffsRepository.save(stuffs);
         }
@@ -160,7 +160,7 @@ public class ToBuysService {
      */
     @Transactional
     public int deleteToBuyByIds(Long userId, int tobuyId) {
-        return toBuysRepository.deleteByUser_IdAndTobuyId(userId, tobuyId);
+        return toBuysRepository.deleteByUserIdAndTobuyId(userId, tobuyId);
     }
 
     public Stocks buyToBuys(String username, ToBuysDTO dto) {
@@ -174,9 +174,9 @@ public class ToBuysService {
         stock.setUser(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());
+        stock.setLastUpdate(dto.getLastUpdate());
+        stock.setBuyDate(dto.getBuyDate());
+        stock.setExpDate(dto.getExpDate());
         deleteToBuyByIds(dto.getUserId(), dto.getTobuyId());
         // データベースに保存
         return stocksRepository.save(stock);