diff --git a/app/route/execute/service/execute_service.py b/app/route/execute/service/execute_service.py
index edfa33c..b8273d6 100644
--- a/app/route/execute/service/execute_service.py
+++ b/app/route/execute/service/execute_service.py
@@ -19,7 +19,7 @@ def execute_code(source_code: str, user_input: str):
         process = subprocess.run(
             args=["python3", "-c", source_code],
             input=user_input,
-            capture_output=True,    # stdout, stderr 별도의 Pipe에서 처리
+            capture_output=True,  # stdout, stderr 별도의 Pipe에서 처리
             timeout=3,  # limit child process execute time
             check=True,  # CalledProcessError exception if return_code is 0
             text=True
@@ -28,17 +28,25 @@ def execute_code(source_code: str, user_input: str):
 
     # 프로세스 실행 중 비정상 종료
     except subprocess.CalledProcessError as e:
-        raise CodeSyntaxError(ErrorEnum.CODE_SYNTAX_ERROR, {"error": e.stderr})
+        line_number = _get_error_line_number(e.stderr)
+        raise CodeSyntaxError(ErrorEnum.CODE_SYNTAX_ERROR, {"lineNumber": line_number, "error": e.stderr})
 
     except Exception as e:
         logger.error("[Unexpected Exception] execute_code()")
         raise TaskFailException(ErrorEnum.CODE_EXEC_SERVER_ERROR, dict(e.args))
 
 
+def _get_error_line_number(error_msg):
+    # pattern : 'line '숫자', in'
+    matches = re.findall(r'line (\d+), in', error_msg)
+    if matches:
+        return int(matches[-1])
+    return 1
+
+
 def _contains_forbidden_imports(code: str) -> bool:
     # 금지된 모듈이 코드에 있는지 확인
     for module in FORBIDDEN_IMPORTS:
         if re.search(rf'\bimport\s+{module}\b', code):
             return True
     return False
-