diff --git a/backend/src/main/java/com/example/Piroin/project/domain/question/controller/ImageController.java b/backend/src/main/java/com/example/Piroin/project/domain/question/controller/ImageController.java
index 8a9f658..1fdac22 100644
--- a/backend/src/main/java/com/example/Piroin/project/domain/question/controller/ImageController.java
+++ b/backend/src/main/java/com/example/Piroin/project/domain/question/controller/ImageController.java
@@ -1,8 +1,11 @@
 package com.example.Piroin.project.domain.question.controller;
 
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.http.ResponseEntity;
 import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -11,12 +14,6 @@
 import java.util.Map;
 import java.util.UUID;
 
-/* 이미지 업로드/조회 컨트롤러
-
-[흐름]
-1. POST /api/images 로 이미지 파일 전송 → URL 반환
-2. 반환된 URL을 질문/댓글 등록 요청의 imageUrl 필드에 포함
-3. GET /api/images/{filename} 으로 저장된 이미지 조회 */
 @RestController
 @RequestMapping("/api/images")
 public class ImageController {
@@ -24,27 +21,36 @@ public class ImageController {
     @Value("${file.upload-dir}")
     private String uploadDir;
 
-    /* 이미지 업로드
-    POST /api/images
-    Content-Type: multipart/form-data */
-    @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
+    // consumes 제거
+    // Swagger용 어노테이션 추가 (파일 선택 버튼 표시용)
+    @PostMapping
+    @Operation(
+        requestBody = @io.swagger.v3.oas.annotations.parameters.RequestBody(
+            content = @Content(mediaType = MediaType.MULTIPART_FORM_DATA_VALUE,
+                schema = @Schema(type = "object", requiredProperties = {"file"}))
+        )
+    )
     public ResponseEntity<Map<String, String>> uploadImage(
             @RequestParam("file") MultipartFile file
     ) throws IOException {
 
-        // 저장 폴더 없으면 생성
-        File dir = new File(uploadDir);
+        // 절대 경로로 변환
+        File dir = new File(uploadDir).getAbsoluteFile();
         if (!dir.exists()) {
             dir.mkdirs();
         }
 
         // 파일명 중복 방지: UUID + 원본 확장자
         String originalName = file.getOriginalFilename();
-        String extension = originalName.substring(originalName.lastIndexOf("."));
+        String extension = "";
+        if (originalName != null && originalName.contains(".")) {
+            extension = originalName.substring(originalName.lastIndexOf("."));
+        }
         String savedName = UUID.randomUUID() + extension;
 
-        // 파일 저장
-        file.transferTo(new File(uploadDir + savedName));
+        // 절대 경로로 파일 저장
+        File targetFile = new File(dir, savedName);
+        file.transferTo(targetFile);
 
         return ResponseEntity.ok(Map.of("imageUrl", "/api/images/" + savedName));
     }
@@ -53,7 +59,7 @@ public ResponseEntity<Map<String, String>> uploadImage(
     // GET /api/images/{filename}
     @GetMapping("/{filename}")
     public ResponseEntity<byte[]> getImage(@PathVariable String filename) throws IOException {
-        File file = new File(uploadDir + filename);
+        File file = new File(new File(uploadDir).getAbsoluteFile(), filename);  // ← 절대 경로
 
         if (!file.exists()) {
             return ResponseEntity.notFound().build();
diff --git a/backend/uploads/3ba85e36-14a1-478f-aac7-9d0a1e0bc0a8.png b/backend/uploads/3ba85e36-14a1-478f-aac7-9d0a1e0bc0a8.png
new file mode 100644
index 0000000..52a8826
Binary files /dev/null and b/backend/uploads/3ba85e36-14a1-478f-aac7-9d0a1e0bc0a8.png differ
diff --git a/backend/uploads/83d5e181-fa7e-43a8-b28c-7d216b12b0bf.png b/backend/uploads/83d5e181-fa7e-43a8-b28c-7d216b12b0bf.png
new file mode 100644
index 0000000..52a8826
Binary files /dev/null and b/backend/uploads/83d5e181-fa7e-43a8-b28c-7d216b12b0bf.png differ
diff --git a/backend/uploads/cc5db130-976d-4098-8f2a-ecc538ca5a0c.png b/backend/uploads/cc5db130-976d-4098-8f2a-ecc538ca5a0c.png
new file mode 100644
index 0000000..52a8826
Binary files /dev/null and b/backend/uploads/cc5db130-976d-4098-8f2a-ecc538ca5a0c.png differ
diff --git a/backend/uploads/eb8c0be8-6fce-4cf4-92aa-758914f31699.png b/backend/uploads/eb8c0be8-6fce-4cf4-92aa-758914f31699.png
new file mode 100644
index 0000000..52a8826
Binary files /dev/null and b/backend/uploads/eb8c0be8-6fce-4cf4-92aa-758914f31699.png differ