diff --git a/src/main/java/solution/gdsc/PathPal/ImageNotFoundException.java b/src/main/java/solution/gdsc/PathPal/ImageNotFoundException.java
new file mode 100644
index 0000000..732286e
--- /dev/null
+++ b/src/main/java/solution/gdsc/PathPal/ImageNotFoundException.java
@@ -0,0 +1,10 @@
+package solution.gdsc.PathPal;
+
+import solution.gdsc.PathPal.global.error.ErrorCode;
+import solution.gdsc.PathPal.global.error.baseExcaption.NotFoundException;
+
+public class ImageNotFoundException extends NotFoundException {
+    public ImageNotFoundException() {
+        super(ErrorCode.IMAGE_NOT_FOUND);
+    }
+}
diff --git a/src/main/java/solution/gdsc/PathPal/MainController.java b/src/main/java/solution/gdsc/PathPal/MainController.java
index 9166c35..e1a57fd 100644
--- a/src/main/java/solution/gdsc/PathPal/MainController.java
+++ b/src/main/java/solution/gdsc/PathPal/MainController.java
@@ -1,5 +1,6 @@
 package solution.gdsc.PathPal;
 
+import io.swagger.v3.oas.annotations.Operation;
 import org.springframework.core.io.FileSystemResource;
 import org.springframework.core.io.Resource;
 import org.springframework.http.MediaType;
@@ -9,33 +10,39 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
-import java.nio.file.Path;
 
 @RestController
 public class MainController {
 
     //@Value("${image.path}")
     private String path = "/home/hsk4991149/static/image/";
+    //private String path = "/Users/hongseungtaeg/Desktop/project/GDSC-PathPal/PathPal/src/main/resources/static/";
 
     @GetMapping
+    @Operation(summary = "index page", description = "index page Test")
     public String index() {
         return "hello world!";
     }
 
     @PostMapping("/test")
+    @Operation(summary = "Post request body(json)", description = "request body(json) Test")
     public TestResponse test(@RequestBody TestRequest testRequest) {
         return TestResponse.from(testRequest.getName());
     }
 
     @GetMapping("/image/{imageId}")
+    @Operation(summary = "이미지 조회", description = "WebSocket으로 저장된 이미지를 조회합니다.(Content-Type: image/jpeg)")
     public ResponseEntity<Resource> viewImg(@PathVariable(name = "imageId") Integer imageId) throws IOException {
         final String fileFullPath = path + imageId + ".jpeg";
-        System.out.println(fileFullPath);
-        Path path = new File(fileFullPath).toPath();
+        File file = new File(fileFullPath);
 
-        FileSystemResource resource = new FileSystemResource(path);
+        if (!file.exists()) {
+            throw new ImageNotFoundException();
+        }
+
+        FileSystemResource resource = new FileSystemResource(file);
         return ResponseEntity.ok()
-                .contentType(MediaType.parseMediaType(Files.probeContentType(path)))
+                .contentType(MediaType.parseMediaType(Files.probeContentType(file.toPath())))
                 .body(resource);
     }
 }
diff --git a/src/main/java/solution/gdsc/PathPal/global/config/SwaggerConfig.java b/src/main/java/solution/gdsc/PathPal/global/config/SwaggerConfig.java
index 6cf3096..e19c2ba 100644
--- a/src/main/java/solution/gdsc/PathPal/global/config/SwaggerConfig.java
+++ b/src/main/java/solution/gdsc/PathPal/global/config/SwaggerConfig.java
@@ -13,8 +13,8 @@
 
 @OpenAPIDefinition(
         info = @Info(
-                title = "Greenmate API 명세서",
-                description = "alpha-test를 위한 Greenmate API 명세서입니다.",
+                title = "PathPal API 명세서",
+                description = "GDSC Solution Challenge - PathPal API 명세서입니다.",
                 version = "0.1"
         )
 )
diff --git a/src/main/java/solution/gdsc/PathPal/global/config/WebSocketHandler.java b/src/main/java/solution/gdsc/PathPal/global/config/WebSocketHandler.java
index a4bc9b5..a76fa47 100644
--- a/src/main/java/solution/gdsc/PathPal/global/config/WebSocketHandler.java
+++ b/src/main/java/solution/gdsc/PathPal/global/config/WebSocketHandler.java
@@ -18,6 +18,7 @@ public class WebSocketHandler extends BinaryWebSocketHandler {
 
     //@Value("${image.path:/home/hsk4991149/static/image/}")
     private String path = "/home/hsk4991149/static/image/";
+    //private String path = "/Users/hongseungtaeg/Desktop/project/GDSC-PathPal/PathPal/src/main/resources/static/";
 
     private final Set<WebSocketSession> sessions = ConcurrentHashMap.newKeySet();
 
diff --git a/src/main/java/solution/gdsc/PathPal/global/error/ErrorCode.java b/src/main/java/solution/gdsc/PathPal/global/error/ErrorCode.java
index e8e257c..9adc8a7 100644
--- a/src/main/java/solution/gdsc/PathPal/global/error/ErrorCode.java
+++ b/src/main/java/solution/gdsc/PathPal/global/error/ErrorCode.java
@@ -16,6 +16,9 @@ public enum ErrorCode {
     INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "C005", "서버 내부에서 에러가 발생하였습니다."),
     BAD_REQUEST(HttpStatus.BAD_REQUEST, "C006", "Bad Request"),
 
+    // image
+    IMAGE_NOT_FOUND(HttpStatus.BAD_REQUEST, "I001", "이미지를 찾을 수 없습니다."),
+
     ;
 
     private final HttpStatus status;