[Review of external therapy for internal diseases in Ming yi lei an (Classified Medical Records of Famous Doctors)].

External therapy was applied for internal diseases in 78 case records in Classified Medical Records of Famous Doctors, including 19 kinds of external therapies for 41 categories of internal disease involving 40 famous doctors. The external therapy embodied the principle of "treatment according to differential diagnosis of Zhen "of TMC", "regular treatment", "contrary treatment" and multiple routes of administration were given in accordance with the differentiation, demonstrating that ancient doctors paid high attention to external therapy for internal diseases.