diff --git a/apps/midjourney/service.py b/apps/midjourney/service.py
index d3a6df9..5584dcb 100644
--- a/apps/midjourney/service.py
+++ b/apps/midjourney/service.py
@@ -260,7 +260,7 @@ class MidjourneyService:
                 if not original_format:
                     original_format = 'PNG'
             
-            if width < 1500 or height < 1500:
+            if width < 500 or height < 500:
                 logger.error(f"图像尺寸不符合预期: {width}x{height}, 应该接近2048x2048")
                 return None