diff --git a/ai/app/schemas/train_label_data.py b/ai/app/schemas/train_label_data.py
new file mode 100644
index 0000000..372d3f7
--- /dev/null
+++ b/ai/app/schemas/train_label_data.py
@@ -0,0 +1,28 @@
+from pydantic import BaseModel, Field
+
+
+class Segment(BaseModel):
+    x: float = Field(..., ge=0, le=1)
+    y: float = Field(..., ge=0, le=1)
+
+    def to_string(self) -> str:
+        return f"{self.x} {self.y}"
+
+class DetectionLabelData(BaseModel):
+    label_id: int = Field(..., ge=0)
+    center_x: float = Field(..., ge=0, le=1)
+    center_y: float = Field(..., ge=0, le=1)
+    width: float = Field(..., ge=0, le=1)
+    height: float = Field(..., ge=0, le=1)
+
+    def to_string(self) -> str:
+        return f"{self.label_id} {self.center_x} {self.center_y} {self.width} {self.height}"
+
+
+class SegmentationLabelData(BaseModel):
+    label_id: int
+    segments: list[Segment]
+
+    def to_string(self) -> str:
+        points_str = " ".join([segment.to_string() for segment in self.segments])
+        return f"{self.label_id} {points_str}"
\ No newline at end of file
diff --git a/ai/app/utils/file_utils.py b/ai/app/utils/file_utils.py
index e322682..15faa2d 100644
--- a/ai/app/utils/file_utils.py
+++ b/ai/app/utils/file_utils.py
@@ -3,7 +3,7 @@ import shutil
 import yaml
 from PIL import Image
 from schemas.train_request import TrainDataInfo
-from schemas.predict_response import LabelData
+from schemas.train_label_data import DetectionLabelData, SegmentationLabelData, Segment
 import urllib
 import json
 
@@ -71,30 +71,30 @@ def create_detection_train_label(label:dict, label_path:str, label_converter:dic
             y1 = shape["points"][0][1]
             x2 = shape["points"][1][0]
             y2 = shape["points"][1][1]
-            train_label = {
-                'label_id': label_converter[shape["group_id"]],     # 모델의 id  (converter : pjt category pk -> model category id)
-                'center_x': (x1 + x2) / 2 / label["imageWidth"],    # 중심 x 좌표
-                'center_y': (y1 + y2) / 2 / label["imageHeight"],   # 중심 y 좌표
-                'width': (x2 - x1) / label["imageWidth"],           # 너비
-                'height': (y2 - y1) / label["imageHeight"]          # 높이
-            }
-
-            for key, value in train_label[1:].items():  # label_id를 제외한 다른 key에 대해
-                if value<0 or value >1:                 # 0과 1사이가 아니라면 에러
-                    raise ValueError(f"Improper value in {label_path}: {key} = {value}")
+            detection_label = DetectionLabelData(
+                label_id= label_converter[shape["group_id"]],     # 모델의 id  (converter : pjt category pk -> model category  id)
+                center_x= (x1 + x2) / 2 / label["imageWidth"],    # 중심 x 좌표
+                center_y= (y1 + y2) / 2 / label["imageHeight"],   # 중심 y 좌표
+                width= (x2 - x1) / label["imageWidth"],           # 너비
+                height= (y2 - y1) / label["imageHeight"]          # 높이
+            )
             
-            train_label_txt.write(" ".join(map(str, train_label.values()))+"\n") # str변환 후 txt에 쓰기
+            train_label_txt.write(detection_label.to_string()+"\n") # str변환 후 txt에 쓰기
 
 def create_segmentation_train_label(label:dict, label_path:str, label_converter:dict[int, int]):
     with open(label_path, "w") as train_label_txt:
         for shape in label["shapes"]:
-            train_label = []
-            train_label.append(str(label_converter[shape["group_id"]])) # label Id
-            for x, y in shape["points"]:
-                train_label.append(str(x / label["imageWidth"]))
-                train_label.append(str(y / label["imageHeight"]))
-            train_label_txt.write(" ".join(train_label)+"\n")
-
+            segmentation_label = SegmentationLabelData(
+                label_id = label_converter[shape["group_id"]],      # label Id
+                segments = [
+                    Segment(
+                        x=x / label["imageWidth"],          # shapes의 points 갯수만큼 x, y 반복
+                        y=y / label["imageHeight"]
+                    ) for x, y in shape["points"]
+                ]
+            )
+            train_label_txt.write(segmentation_label.to_string()+"\n")
+            
 def join_path(path, *paths):
     """os.path.join()과 같은 기능, os import 하기 싫어서 만듦"""
     return os.path.join(path, *paths)