临床使用中药治病,由于病情复杂,如单味药不能达到治疗目的时,就必须根据病情需要,选用适宜药物配合应用,才能适应复杂多变的病情,收到良好的疗效。因而古人早已提出“相须”、“相使”、“相制”、“相反”的配伍方法。这些方法具体运用于药药之间的关系上,就称之为“对药”为了便于指导临床,北齐徐子才曾有《药对》一书 Clinical use of traditional Chinese medicine treatment, due to complex conditions, such as single herbs can not achieve the purpose of treatment, it must be based on the needs of the disease, the use of appropriate drugs with the application in order to adapt to the complex and changeable condition, received good results. As a result, the ancients had long put forward the method of compatibility of “mutualism,” “phase making,” “phase preparation,” and “opposite”. These methods are specifically used in the relationship between drugs, it is called “on the drug” In order to facilitate the clinical guidance, Northern Qi Xu Zicai had “drug right” a book