/api/youzan.category.getbyid/1.0.0

{"trace_id":"yz7-0a34f819-1650952394490-437069",
"code":200,"data":{"rule_id":"1007000600050006","has_children":false,"level":4,"parent_id":35013,"name":"感冒解热镇痛药","id":35101,"public_propertys":[],"private_propertys":[]},"success":true,"message":"successful"}

"public_propertys":[]为什么没有值，

系统已经维护了:

您好，您的入参没有传入is_include_property，不传时默认为false，故没有返回。您可以传入为true重试下。
详情参考接口文档：https://doc.youzanyun.com/detail/API/0/832