四归经有十二经的病也就有治十二经病的药。所谓归经简单地说,就是说明药物对某个脏腑经络的疾病起主要的治疗作用。例如:麻黄解表发汗,平喘,因为它能治疗肺经疾病的作用,所以归肺经;麻黄并有利尿作用,所以又归入膀胱经,中医认为某一症状或症候群的出现,那是脏腑十二经络发生病变时的表现,所以归经与脏腑十二经络紧密地联系起 Four diseases that have passed through the Twelve Classics also have drugs that treat the Twelve Menstrual Diseases. The so-called “regularization” simply states that drugs play a major therapeutic role in diseases of certain organs and meridians. For example: Ephedra relieving sweating and asthma, because it can treat the diseases of the lungs, so it belongs to the lung meridian; ephedra and diuresis, so it goes back to the bladder meridian. The Chinese doctor believes that the appearance of a symptom or syndrome is The performance of lesions in the meridians and meridians is closely related to the 12 meridians of the organs.