diff --git a/src/main/java/ttakkeun/ttakkeun_server/controller/ChatGPTTestController.java b/src/main/java/ttakkeun/ttakkeun_server/controller/ChatGPTTestController.java
deleted file mode 100644
index 260afde..0000000
--- a/src/main/java/ttakkeun/ttakkeun_server/controller/ChatGPTTestController.java
+++ /dev/null
@@ -1,49 +0,0 @@
-package ttakkeun.ttakkeun_server.controller;
-
-import io.swagger.v3.oas.annotations.Operation;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-import ttakkeun.ttakkeun_server.dto.diagnose.ChatGPTRequestDTO;
-import ttakkeun.ttakkeun_server.service.DiagnoseService.UseChatGPTService;
-
-import java.util.List;
-import java.util.Map;
-
-@Slf4j
-@RestController
-@RequiredArgsConstructor
-@RequestMapping("/api/ChatGPT")
-public class ChatGPTTestController {
-
-    @Autowired
-    private UseChatGPTService useChatGPTService;
-
-    // 사용 가능한 ChatGPT 모델 확인
-    @Operation(summary = "사용 가능한 ChatGPT 모델 확인")
-    @GetMapping("/modelList")
-    public ResponseEntity<List<Map<String, Object>>> selectModelList() {
-        List<Map<String, Object>> result = useChatGPTService.modelList();
-        return new ResponseEntity<>(result, HttpStatus.OK);
-    }
-
-    // 사용하려는 ChatGPT 모델이 유효한 모델인지 확인
-    @Operation(summary = "유효한 ChatGPT 모델인지 확인")
-    @GetMapping("/model")
-    public ResponseEntity<Map<String, Object>> isValidModel(@RequestParam(name = "modelName") String modelName) {
-        Map<String, Object> result = useChatGPTService.isValidModel(modelName);
-        return new ResponseEntity<>(result, HttpStatus.OK);
-    }
-
-    // GPT 명령어 직접 수행, 테스트용
-    @Operation(summary = "ChatGPT 통신 테스트용")
-    @PostMapping("/prompt")
-    public ResponseEntity<Map<String, Object>> selectPrompt(@RequestBody ChatGPTRequestDTO chatGPTRequestDTO) {
-        log.debug("param :: " + chatGPTRequestDTO.toString());
-        Map<String, Object> result = useChatGPTService.prompt(chatGPTRequestDTO);
-        return new ResponseEntity<>(result, HttpStatus.OK);
-    }
-}
diff --git a/src/main/java/ttakkeun/ttakkeun_server/repository/TipRepository.java b/src/main/java/ttakkeun/ttakkeun_server/repository/TipRepository.java
index 330910f..71b24f0 100644
--- a/src/main/java/ttakkeun/ttakkeun_server/repository/TipRepository.java
+++ b/src/main/java/ttakkeun/ttakkeun_server/repository/TipRepository.java
@@ -4,6 +4,7 @@
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 import ttakkeun.ttakkeun_server.entity.Member;
 import ttakkeun.ttakkeun_server.entity.Tip;
@@ -28,6 +29,7 @@ public interface TipRepository extends JpaRepository<Tip, Long> {
     //페이징을 이용해 10개 단위로 작성한 팁 가져오기
     Page<Tip> findByMember(Member member, Pageable pageable);
 
-    Optional<Member> findMemberByTipId(Long tipId);
+    @Query("SELECT t.member FROM Tip t WHERE t.tipId = :tipId")
+    Optional<Member> findMemberByTipId(@Param("tipId") Long tipId);
 }