diff --git a/bin/backend_accounting.py b/bin/backend_accounting.py
index e098c6b9..261243f3 100644
--- a/bin/backend_accounting.py
+++ b/bin/backend_accounting.py
@@ -30,9 +30,22 @@ from product_management import get_manager
 p = ProgramPath()
 config = getConfig(NS={'workdir': os.getcwd(), 'ProgramPath': p})
 db = DBPools(config.databases)
-# 防止 businessdate._get_db() 创建新的空 DBPools 实例
+# 生产环境 get_business_date 内直接 db=DBPools() 创建空实例 → sqlorFactory(None)
+# 替换为使用已初始化的 db
 import appbase.businessdate as _bd
-_bd._get_db = lambda: db
+_orig_gbd = _bd.get_business_date
+async def _patched_get_business_date(sor=None):
+    async def _f(sor):
+        sql = "select * from params where params_name = 'business_date'"
+        recs = await sor.sqlExe(sql, {})
+        if len(recs) > 0:
+            return recs[0]['params_value']
+        raise Exception('BusinessDateParamsError')
+    if sor:
+        return await _f(sor)
+    async with db.sqlorContext(get_module_dbname('appbase')) as sor:
+        return await _f(sor)
+_bd.get_business_date = _patched_get_business_date
 
 def get_module_dbname(m):
 	return 'sage'