diff --git a/pricing/pricing.py b/pricing/pricing.py
index be3485f..a21fd29 100644
--- a/pricing/pricing.py
+++ b/pricing/pricing.py
@@ -983,9 +983,16 @@ async def get_pricing_program_timeing(pptid):
 		return ppt
 
 async def test_pricing(pptid, data):
-	ppt = await get_pricing_program_timeing(pptid)
-	# ppt.pricing_data 已被 ppt_db2app 解析为 dict，需要转回 YAML 字符串
-	yamlstr = yaml.dump(ppt.pricing_data, allow_unicode=True) if isinstance(ppt.pricing_data, dict) else ppt.pricing_data
+	# 直接从 DB 获取原始 pricing_data（不调用 ppt_db2app），避免 DictObject 序列化问题
+	env = ServerEnv()
+	async with get_sor_context(env, 'pricing') as sor:
+		recs = await sor.R('pricing_program_timing', {'id': pptid})
+		if len(recs) == 0:
+			return None
+		ppt = recs[0]
+		if ppt.pricing_data is None:
+			return None
+	yamlstr = ppt.pricing_data  # 原始 YAML 字符串
 	prices = PricingProgram.get_pricing_from_ymalstr(data, yamlstr)
 	if prices is None:
 		return None