diff --git a/apps/midjourney/service.py b/apps/midjourney/service.py
index 1688e50..d3a6df9 100644
--- a/apps/midjourney/service.py
+++ b/apps/midjourney/service.py
@@ -406,7 +406,12 @@ class MidjourneyService:
         if "seed" not in options or not options.get('seed'):
             options['seed'] = random.randint(0, 4294967295)
             
+        if 'image_weight' in config and isinstance(config['image_weight'], (int, float)):
+            iw = max(0.1, min(config['image_weight'], 3))
+            options['iw'] = iw
+            
         seed = options.pop('seed', None)
+        
         parameter = ""
         no_value_key = ['relax', 'fast', 'turbo', 'tile']
         for key, value in options.items():
@@ -414,7 +419,7 @@ class MidjourneyService:
                 parameter += f" --{key}"
             else:
                 parameter += f" --{key} {value}"
-                
+        
         if seed:
             parameter += f" --seed {seed}"
             logger.info(f"使用的seed值: {seed}")
@@ -436,11 +441,7 @@ class MidjourneyService:
                         
             if new_image_urls:
                 prompt = " ".join(new_image_urls) + " " + prompt
-                
-                if 'image_weight' in config and isinstance(config['image_weight'], (int, float)):
-                    iw = max(0.1, min(config['image_weight'], 3))
-                    parameter += f" --iw {iw}"
-        
+            
         if 'characters' in config and config['characters']:
             char_urls = []
             characters = config['characters'] if isinstance(config['characters'], list) else [config['characters']]