diff --git a/app/service/design/service.py b/app/service/design/service.py
index e492089..211b485 100644
--- a/app/service/design/service.py
+++ b/app/service/design/service.py
@@ -183,13 +183,11 @@ def update_base_size_priority(layers, size):
     # 计算新图片的宽度和高度
     max_x = max([layer["position"][1] + layer["image"].size[1] for layer in layers])
     min_x = min([layer["position"][1] for layer in layers])
-    max_y = max([layer["position"][0] + layer["image"].size[0] for layer in layers])
-    min_y = min([layer["position"][0] for layer in layers])
     new_width = max(size[0], max_x - min_x)
-    new_height = max(size[1], max_y - min_y)
+    new_height = size[1]
 
     # 更新图片的坐标
     for layer in layers:
-        updated_coords = [layer["position"][1] - min_x, layer["position"][0] - min_y]
+        updated_coords = [layer["position"][1] - min_x, layer["position"][0]]
         layer['position'] = updated_coords
     return layers, (new_width, new_height)