Proprietary Chinese medicines expired one year can not be eaten again, proprietary Chinese medicine dosage form of pills, powder, paste, etc., the production of which need to be related to the drug with other auxiliary materials, compared to a single flavor of traditional Chinese medicine, its storage conditions require more, such as air humidity, temperature and so on. Over the shelf life of one year, its internal components have deteriorated, so the medicinal properties can no longer be taken by the destruction, does not have a medicinal role, and even produce toxins. Chinese medicine over the shelf life of one year, and its internal components may be moldy, not only to play its due role in the efficacy of the medicine, but may also bring damage to the human body. The Therefore, to take pCms, must be within its shelf life, more than one year of shelf life resolutely can not be taken, so as not to cause damage to the human body.