医生是通过望、闻、问、切或是望、触、叩、听四rrrrrrrrrn诊，进行综合分析来诊断疾病的，这其中特别是望rrrrrrrrrn诊，即医生通过察颜观色，对诊断疾病轻重、分析疾rrrrrrrrrn病的发展、预后和决定治疗原则有重要的意义。 The doctor diagnoses the disease by looking, smelling, asking, cutting or looking, touching, knocking, listening to a comprehensive analysis to diagnose the disease, Among them, in particular, hope to see the doctor, that is, the doctor observed by Yan color, the severity of the diagnosis of disease, analysis of disease r r r r r r r r r n The development of the disease, the prognosis and the decision of treatment have important meanings.