diff --git a/src/main/java/com/cmc/mercury/domain/book/controller/BookController.java b/src/main/java/com/cmc/mercury/domain/book/controller/BookController.java
new file mode 100644
index 0000000..98da516
--- /dev/null
+++ b/src/main/java/com/cmc/mercury/domain/book/controller/BookController.java
@@ -0,0 +1,40 @@
+package com.cmc.mercury.domain.book.controller;
+
+import com.cmc.mercury.domain.book.dto.BookExistResponse;
+import com.cmc.mercury.domain.book.dto.BookSearchRequest;
+import com.cmc.mercury.domain.book.dto.BookSearchResponse;
+import com.cmc.mercury.domain.book.service.BookService;
+import com.cmc.mercury.global.response.SuccessResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/books")
+@RequiredArgsConstructor
+@Tag(name = "BookController", description = "도서 검색 관련 API")
+public class BookController {
+
+    private final BookService bookService;
+
+    @GetMapping("/search")
+    @Operation(summary = "도서 검색", description = "검색어를 통해 도서 목록을 정렬하여 반환합니다.")
+    public Mono<SuccessResponse<BookSearchResponse>> searchBooks(
+            @ModelAttribute @Valid BookSearchRequest request) {
+        return bookService.searchBooks(request)
+                .map(SuccessResponse::ok);
+    }
+
+    @GetMapping("/exist")
+    @Operation(summary = "기록 중복 생성 검사",
+            description = "isbn을 통해 해당 도서에 대한 기록을 생성한 적이 있는지의 여부를 반환합니다.")
+    public SuccessResponse<BookExistResponse> existBooks(
+            @RequestParam("userId") Long testUserId,
+            @RequestParam String isbn13
+    ) {
+        return SuccessResponse.ok(bookService.existBooks(testUserId, isbn13));
+    }
+}
diff --git a/src/main/java/com/cmc/mercury/domain/book/controller/BookSearchController.java b/src/main/java/com/cmc/mercury/domain/book/controller/BookSearchController.java
deleted file mode 100644
index f5e59c4..0000000
--- a/src/main/java/com/cmc/mercury/domain/book/controller/BookSearchController.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package com.cmc.mercury.domain.book.controller;
-
-import com.cmc.mercury.domain.book.dto.BookSearchRequest;
-import com.cmc.mercury.domain.book.dto.BookSearchResponse;
-import com.cmc.mercury.domain.book.service.BookSearchService;
-import com.cmc.mercury.global.response.SuccessResponse;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import jakarta.validation.Valid;
-import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ModelAttribute;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-import reactor.core.publisher.Mono;
-
-@RestController
-@RequestMapping("/books")
-@RequiredArgsConstructor
-@Tag(name = "BookSearchController", description = "도서 검색 관련 API")
-public class BookSearchController {
-
-    private final BookSearchService bookSearchService;
-
-    @GetMapping("/search")
-    @Operation(summary = "도서 검색", description = "검색어를 통해 도서 목록을 정렬하여 반환합니다.")
-    public Mono<SuccessResponse<BookSearchResponse>> searchBooks(
-            @ModelAttribute @Valid BookSearchRequest request) {
-        return bookSearchService.searchBooks(request)
-                .map(SuccessResponse::ok);
-    }
-}
diff --git a/src/main/java/com/cmc/mercury/domain/book/dto/BookExistResponse.java b/src/main/java/com/cmc/mercury/domain/book/dto/BookExistResponse.java
new file mode 100644
index 0000000..c57e010
--- /dev/null
+++ b/src/main/java/com/cmc/mercury/domain/book/dto/BookExistResponse.java
@@ -0,0 +1,15 @@
+package com.cmc.mercury.domain.book.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "선택된 도서의 기록이 존재하는지 여부 응답 형식")
+public record BookExistResponse(
+
+        @Schema(description = "중복 등록 여부")
+        boolean isRegistered,
+
+        @Schema(description = "독서 기록이 존재할 때만 값 반환, 존재하지 않으면 null 반환")
+        Long recordId
+) {
+
+}
diff --git a/src/main/java/com/cmc/mercury/domain/book/repository/BookRepository.java b/src/main/java/com/cmc/mercury/domain/book/repository/BookRepository.java
index dabda06..f26806f 100644
--- a/src/main/java/com/cmc/mercury/domain/book/repository/BookRepository.java
+++ b/src/main/java/com/cmc/mercury/domain/book/repository/BookRepository.java
@@ -10,4 +10,6 @@
 public interface BookRepository extends JpaRepository<Book, Long> {
 
     Optional<Book> findByIsbn13(String isbn13);
+
+    boolean existsByIsbn13(String isbn13);
 }
diff --git a/src/main/java/com/cmc/mercury/domain/book/service/BookSearchService.java b/src/main/java/com/cmc/mercury/domain/book/service/BookService.java
similarity index 76%
rename from src/main/java/com/cmc/mercury/domain/book/service/BookSearchService.java
rename to src/main/java/com/cmc/mercury/domain/book/service/BookService.java
index ebfd3ca..9c9cb0d 100644
--- a/src/main/java/com/cmc/mercury/domain/book/service/BookSearchService.java
+++ b/src/main/java/com/cmc/mercury/domain/book/service/BookService.java
@@ -1,7 +1,11 @@
 package com.cmc.mercury.domain.book.service;
 
+import com.cmc.mercury.domain.book.dto.BookExistResponse;
 import com.cmc.mercury.domain.book.dto.BookSearchRequest;
 import com.cmc.mercury.domain.book.dto.BookSearchResponse;
+import com.cmc.mercury.domain.book.repository.BookRepository;
+import com.cmc.mercury.domain.record.entity.Record;
+import com.cmc.mercury.domain.record.repository.RecordRepository;
 import com.cmc.mercury.global.exception.CustomException;
 import com.cmc.mercury.global.exception.ErrorCode;
 import lombok.RequiredArgsConstructor;
@@ -13,10 +17,15 @@
 import org.springframework.web.util.UriComponentsBuilder;
 import reactor.core.publisher.Mono;
 
+import java.util.Optional;
+
 @Service
 @RequiredArgsConstructor
 @Slf4j
-public class BookSearchService {
+public class BookService {
+
+    private final BookRepository bookRepository;
+    private final RecordRepository recordRepository;
 
     @Value("${aladin.api.url}")
     private String aladinUrl;
@@ -81,4 +90,21 @@ private String buildSearchUrl(BookSearchRequest request) {
         // log.info("Built API request URL: {}", url);
         return url;
     }
+
+    public BookExistResponse existBooks(Long testUserId, String isbn13) {
+
+        // Book 존재 여부부터 확인
+        if (!bookRepository.existsByIsbn13(isbn13)) {
+            return new BookExistResponse(false, null);
+        }
+
+        // 사용자에게 독서 기록 존재 여부 확인
+        Optional<Record> record = recordRepository.findByUser_TestUserIdAndBook_Isbn13(testUserId, isbn13);
+
+        if (record.isEmpty()) {
+            return new BookExistResponse(false, null);
+        }
+
+        return new BookExistResponse(true, record.get().getId());
+    }
 }
diff --git a/src/main/java/com/cmc/mercury/domain/record/repository/RecordRepository.java b/src/main/java/com/cmc/mercury/domain/record/repository/RecordRepository.java
index b020157..8fde1b6 100644
--- a/src/main/java/com/cmc/mercury/domain/record/repository/RecordRepository.java
+++ b/src/main/java/com/cmc/mercury/domain/record/repository/RecordRepository.java
@@ -32,4 +32,6 @@ List<Record> searchRecordsByTitleOrMemoContent(
             @Param("testUserId") Long testUserId,
             @Param("keyword") String keyword,
             @Param("sortType") String sortType);
+
+    Optional<Record> findByUser_TestUserIdAndBook_Isbn13(Long testUserId, String isbn13);
 }
diff --git a/src/main/java/com/cmc/mercury/domain/record/service/RecordService.java b/src/main/java/com/cmc/mercury/domain/record/service/RecordService.java
index fe707d1..4c8794d 100644
--- a/src/main/java/com/cmc/mercury/domain/record/service/RecordService.java
+++ b/src/main/java/com/cmc/mercury/domain/record/service/RecordService.java
@@ -36,7 +36,6 @@ public RecordResponse createRecord(Long testUserId, RecordRequest request) {
 
         User user = userTestService.getOrCreateTestUser(testUserId);
         // 저장되지 않은 도서면 저장
-        // 유저가 해당 도서에 대한 기록을 남긴 적이 있는지 검사해야 하나? -> api만 잘 연결하면 될 듯
         Book book = bookRepository.findByIsbn13(request.book().isbn13())
                 .orElseGet(() -> {
                     try {