中成药没有明确规定的有效期和失效期，但其包装不同，其保质时间长短差别很大。有些密封比较严密的蜡丸尤其是蜜丸，可以保存较长时间不坏。据说有的地方至今还存有清朝时期的药丸，质量完好，成为精品。而有的蜜丸，保存在简易的蜡封纸盒内，就比较容易发霉变质。因此，我们 Chinese patent medicines do not have a clearly defined expiration date and expiry date, but their packaging is different, and their shelf life varies greatly. Some sealed wax pills, especially honey pills, can be stored for a longer period of time. It is said that some places still contain the pills of the Qing Dynasty. They are of good quality and become fine items. Some honeyballs are stored in a simple wax-enclosed carton and are more likely to become moldy. therefore, we