In summer, hot body but cold skin may be caused by Yang Sheng Ge Yin and other reasons. The essence of hot body but cold skin is heat, because the evil heat is full of internal heat, hidden deep inside, the yang qi is curbed, closed inside, can not be penetrated, the yin in the outside. It is manifested as cold extremities (cold limbs, even cold to the elbows and knees and above), but the patient’s heart and chest is hot (irritable and sultry), the abdomen is burning when touched, and the body is cold and does not want to be close to the clothes, etc., and see symptoms of irritable thirst, dry throat, halitosis, white and dry tongue, and yellow urination. Clinically, we can apply cold medicines to treat the disease with pseudo-cold phenomenon, i.e. “treating cold with cold”. It can be analyzed and treated with Chinese medicines such as Bai Hu Gui Zhi Tang, Ma Huang Lian Qiao Chi Xiao Dou Tang and so on. If you feel unwell, it is recommended that you go to the hospital in time and under the guidance of a professional physician.