diff --git a/core/poster_gen.py b/core/poster_gen.py
index 7cabf22..01bd012 100644
--- a/core/poster_gen.py
+++ b/core/poster_gen.py
@@ -400,7 +400,7 @@ class PosterGenerator:
                         valid_additional_texts.append(item)
                     elif isinstance(item, str) and item:
                         # 如果是字符串，转换为字典格式
-                        valid_additional_texts.append({"text": item, "position": "bottom", "size_factor": 0.5})
+                        valid_additional_texts.append({"text": item, "position": "middle", "size_factor": 0.5})
                 
                 print(f"有效额外文本项: {len(valid_additional_texts)}")
                 
@@ -470,7 +470,7 @@ class PosterGenerator:
                         if position == 'top':
                             line_y = int(height * 0.05) + (i * line_height)
                         elif position == 'middle':
-                            line_y = int(height * 0.45) + (i * line_height)
+                            line_y = int(height * 0.4) + (i * line_height)
                         else:  # position == 'bottom' 或其他
                             # 在底部区域，使用更大的垂直间距，比如整个海报高度的65%到85%
                             bottom_start = int(height * 0.65)
diff --git a/utils/tweet_generator.py b/utils/tweet_generator.py
index c14030d..5a6b790 100644
--- a/utils/tweet_generator.py
+++ b/utils/tweet_generator.py
@@ -655,11 +655,11 @@ def generate_posters_for_topic(topic_item: dict,
             if texts:
                 # 确保文本不为空
                 if texts[0]:
-                    text_data["additional_texts"].append({"text": texts[0], "position": "bottom", "size_factor": 0.5})
+                    text_data["additional_texts"].append({"text": texts[0], "position": "middle", "size_factor": 0.8})
                 
                 # 添加第二个文本（如果有并且满足随机条件）
                 if len(texts) > 1 and texts[1] and random.random() < text_possibility:
-                    text_data["additional_texts"].append({"text": texts[1], "position": "bottom", "size_factor": 0.5})
+                    text_data["additional_texts"].append({"text": texts[1], "position": "middle", "size_factor": 0.8})
             
             # 打印要发送的文本数据
             logging.info(f"文本数据: {text_data}")