Zheng Qin'an's Diagnosis and Treatment of Yang Deficiency Syndrome Study

The article based on the three books 《Yi Li Zhen Chuan》《Yi Fa Yuan Tong》 and 《Shang Han Heng Lun》 written by the famous doctor —Zheng qin'an who lived in later Qing dynasty.Probes into Zheng's theory origin about reinforcing Yang to treat Yang deficiency syndrome, the main content,clmical practice and the influence on the later ages.The article mainly discussing Zheng's unique understanding of Yin and Yang.Systematically studied his viewpoint of tonifying Yang and linked with the clinical experience of his own to demonstrate that the thought of Zheng qin'an is a kind of scientific knowledge.wih deeply understanding of 《Shang Han Lun》and Yin-Yang theory discussed in 《Zhou Yi》 and 《Nei Jing》 ,He gradually formed his unique theory of Yang deficiency syndrome's treatment.He thought that Yin and Yang roots hi each other.but "Yang" is major and "Yin" governed by "Yang".he stressed the protective Qi 's critical function in human's life activity.and considered that many disease can be produced if "Yang"is exhausted.He advocated that it's important and necessary to distinguish Yin and Yang very clearly,and aiming at Yang deficiency disease,he had spring up the therapeutic method of "reinforce Yang reatrain Yin",he favoured to ginger,monkshood and cinnamon etc to cure the sickness,and above all,By some clinical examples ,to verify the good effection of using Zheng's theory to treat Yang deficiency syndrom.So author suggests that no matter what disease to be.as long as it's Yang deficiency syndrome,then it's can be cured by reinforcing Yang,and by this study,the author hopes to find some breakthough in curing difficult Disease and chronic disease.