diff --git a/main.py b/main.py
index cc26ea3..d7812fc 100644
--- a/main.py
+++ b/main.py
@@ -30,8 +30,8 @@ from utils.poster_notes_creator import select_additional_images
 def load_config(config_path="poster_gen_config.json"):
     """Loads configuration from a JSON file."""
     if not os.path.exists(config_path):
-        print(f"Error: Configuration file '{config_path}' not found.")
-        print("Please copy 'example_config.json' to 'poster_gen_config.json' and customize it.")
+        logging.error(f"Error: Configuration file '{config_path}' not found.")
+        logging.info("Please copy 'example_config.json' to 'poster_gen_config.json' and customize it.")
         sys.exit(1)
     try:
         with open(config_path, 'r', encoding='utf-8') as f:
@@ -40,23 +40,23 @@ def load_config(config_path="poster_gen_config.json"):
         required_keys = ["api_url", "model", "api_key", "resource_dir", "output_dir", "num", "variants", "topic_system_prompt", "topic_user_prompt", "content_system_prompt", "image_base_dir"]
         if not all(key in config for key in required_keys):
              missing_keys = [key for key in required_keys if key not in config]
-             print(f"Error: Config file '{config_path}' is missing required keys: {missing_keys}")
+             logging.error(f"Error: Config file '{config_path}' is missing required keys: {missing_keys}")
              sys.exit(1)
         
         # 验证prompts_dir或prompts_config至少有一个存在
         if not ("prompts_dir" in config
                 or "prompts_config" in config):
-            print(f"Error: Config file '{config_path}' must contain either 'prompts_dir' or 'prompts_config'")
+            logging.error(f"Error: Config file '{config_path}' must contain either 'prompts_dir' or 'prompts_config'")
             sys.exit(1)
         
         # Resolve relative paths based on config location or a defined base path if necessary
         # For simplicity, assuming paths in config are relative to project root or absolute
         return config
     except json.JSONDecodeError:
-        print(f"Error: Could not decode JSON from '{config_path}'. Check the file format.")
+        logging.error(f"Error: Could not decode JSON from '{config_path}'. Check the file format.")
         sys.exit(1)
     except Exception as e:
-        print(f"Error loading configuration from '{config_path}': {e}")
+        logging.error(f"Error loading configuration from '{config_path}': {e}")
         sys.exit(1)
 
 # Removed generate_topics_step function definition from here