diff --git a/app/service/generate_image/service_generate_image.py b/app/service/generate_image/service_generate_image.py
index 1bc1c91..dac211c 100644
--- a/app/service/generate_image/service_generate_image.py
+++ b/app/service/generate_image/service_generate_image.py
@@ -40,16 +40,17 @@ class GenerateImage:
         if request_data.mode == "img2img":
             # cv2 读图片是BGR PIL读图片是RGB
             self.image = self.get_image(request_data.image_url)
-            self.prompt = request_data.prompt
         else:
             self.image = np.random.randint(0, 256, (1024, 1024, 3), dtype=np.uint8)
-            self.prompt = request_data.prompt
 
+        self.prompt = request_data.prompt
         self.tasks_id = request_data.tasks_id
         self.user_id = self.tasks_id[self.tasks_id.rfind('-') + 1:]
         self.mode = request_data.mode
         self.batch_size = 1
         self.category = request_data.category
+        if self.category == "sketch":
+            self.prompt = f"{self.category},{self.prompt}"
         self.index = 0
         self.gender = request_data.gender
         self.generate_data = {'tasks_id': self.tasks_id, 'status': 'PENDING', 'message': "pending", 'image_url': '', 'category': ''}