diff --git a/core/datasource/flask_server.py b/core/datasource/flask_server.py
index c2b3b12..83217f8 100644
--- a/core/datasource/flask_server.py
+++ b/core/datasource/flask_server.py
@@ -100,7 +100,7 @@ def get_fetcher() -> UniversalDataFetcher:
 
 # 缓存配置
 CACHE_MAXSIZE = int(os.getenv('CACHE_MAXSIZE', '128'))  # 默认缓存128条数据
-CACHE_TTL_SECONDS = int(os.getenv('CACHE_TTL_SECONDS', '300'))  # 默认5分钟过期
+CACHE_TTL_SECONDS = int(os.getenv('CACHE_TTL_SECONDS', '7200'))  # 默认5分钟过期
 
 # 带时间戳的缓存条目
 class TimedCacheEntry: