Monarch medicine: that is, the medicine that plays a major therapeutic role in the prescription for the main symptoms or diseases. It embodies the main direction of the prescription, and its efficacy ranks first in the prescription, so it is an indispensable drug in the prescription. Minister medicine: it is a medicine that assists monarch medicine to strengthen the treatment of main disease and syndrome. Auxiliary drugs: the first meaning is auxiliary drugs, which are used to treat secondary syndrome; The second meaning is adjuvant medicine, which is used to eliminate or slow down the toxicity or strong medicine of monarch medicine and minister medicine; The third meaning is anti-adjuvant, that is, according to the needs of the disease, choosing drugs with the opposite nature to the monarch drugs can play an auxiliary role in treatment. Causing drugs: the first meaning is that the drugs in the cited prescription go directly to the affected area, and the second meaning is to reconcile the effects of drugs and make them work together to eliminate evil. Such as Achyranthes bidentata and Glycyrrhiza uralensis Fisch, are often used as inducers. [