The concept of ”Yin/Yang” penetrates through Chinese culture. The Chinese medicine theory is soaked into it. Much quintessence is absorbed too. People are taken as a small universe. The movement of Yin/Yang Qi has become the key factor of disease. So, the ”Surplus Yin Qi, Cold for Sweating Body” specified in ”Nei Jing, Mao Yau Jin Wei Lun” to study the pathology of sweating disorder. And two cases are selected as the footnote.