diff --git a/server/src/main/java/com/soopgyeol/api/controller/AuthController.java b/server/src/main/java/com/soopgyeol/api/controller/AuthController.java
index f92ac6b..2549192 100644
--- a/server/src/main/java/com/soopgyeol/api/controller/AuthController.java
+++ b/server/src/main/java/com/soopgyeol/api/controller/AuthController.java
@@ -14,9 +14,9 @@
 import java.util.Map;
 
 //임시 토큰 코드 사용 시 활성화
-//import com.soopgyeol.api.domain.user.User;
-//import com.soopgyeol.api.repository.UserRepository;
-//import com.soopgyeol.api.service.jwt.JwtProvider;
+import com.soopgyeol.api.domain.user.User;
+import com.soopgyeol.api.repository.UserRepository;
+import com.soopgyeol.api.service.jwt.JwtProvider;
 @RestController
 @RequiredArgsConstructor
 @RequestMapping("/api/v1/auth/oauth")
@@ -84,20 +84,20 @@ public void kakaoAutoLogin(@RequestParam String code, HttpServletResponse respon
 
 
     // 임시 토큰 생성시 활성화
-//    private final UserRepository userRepository;
-//    private final JwtProvider jwtProvider;
-//    @PostMapping("/dev-login")
-//    public OAuthLoginResponse devLogin(@RequestParam Long userId) {
-//        User user = userRepository.findById(userId)
-//                .orElseThrow(() -> new IllegalArgumentException("유저 없음"));
-//
-//        String jwt = jwtProvider.createToken(user.getId(), user.getRole());
-//
-//        return OAuthLoginResponse.builder()
-//                .jwtToken(jwt)
-//                .isNewUser(false)
-//                .build();
-//    }
+    private final UserRepository userRepository;
+    private final JwtProvider jwtProvider;
+    @PostMapping("/dev-login")
+    public OAuthLoginResponse devLogin(@RequestParam Long userId) {
+        User user = userRepository.findById(userId)
+                .orElseThrow(() -> new IllegalArgumentException("유저 없음"));
+
+        String jwt = jwtProvider.createToken(user.getId(), user.getRole());
+
+        return OAuthLoginResponse.builder()
+                .jwtToken(jwt)
+                .isNewUser(false)
+                .build();
+    }
 
 
 }
diff --git a/server/src/main/java/com/soopgyeol/api/service/buy/BuyServiceImpl.java b/server/src/main/java/com/soopgyeol/api/service/buy/BuyServiceImpl.java
index 8219e9a..fe72b98 100644
--- a/server/src/main/java/com/soopgyeol/api/service/buy/BuyServiceImpl.java
+++ b/server/src/main/java/com/soopgyeol/api/service/buy/BuyServiceImpl.java
@@ -2,8 +2,10 @@
 
 import com.soopgyeol.api.domain.buy.dto.BuyResult;
 import com.soopgyeol.api.domain.buy.entity.Purchase;
+import com.soopgyeol.api.domain.item.entity.Inventory;
 import com.soopgyeol.api.domain.item.entity.Item;
 import com.soopgyeol.api.domain.user.User;
+import com.soopgyeol.api.repository.InventoryRepository;
 import com.soopgyeol.api.repository.ItemRepository;
 import com.soopgyeol.api.repository.PurchaseRepository;
 import com.soopgyeol.api.repository.UserRepository;
@@ -12,19 +14,24 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.time.LocalDateTime;
+
 @Service
 public class BuyServiceImpl implements BuyService {
 
     private final ItemRepository itemRepository;
     private final PurchaseRepository purchaseRepository;
     private final UserRepository userRepository;
+    private final InventoryRepository inventoryRepository;
 
     public BuyServiceImpl(ItemRepository itemRepository,
                           PurchaseRepository purchaseRepository,
-                          UserRepository userRepository) {
+                          UserRepository userRepository,
+                          InventoryRepository inventoryRepository) {
         this.itemRepository = itemRepository;
         this.purchaseRepository = purchaseRepository;
         this.userRepository = userRepository;
+        this.inventoryRepository = inventoryRepository;
     }
 
     @Transactional
@@ -61,6 +68,15 @@ public BuyResult buyItem(Long userId, Long itemId) {
 
         purchaseRepository.save(purchase);
 
+        Inventory inventory = Inventory.builder()
+                .user(user)
+                .item(item)
+                .isBuyed(true)
+                .isDisplayed(false) // 기본값, 필요에 따라 true로
+                .buyAt(LocalDateTime.now())
+                .build();
+        inventoryRepository.save(inventory);
+
         return BuyResult.builder()
                 .itemId(item.getId())
                 .itemName(item.getName())