Chinese medicine determines and categorizes physique according to the overall concept, the doctrine of yin and yang, the five elements, the doctrine of hidden signs, and the theory of essence, blood, fluid, etc. It is roughly divided into three types: yin-yang and peace, yang and yin. 1. Yin and Yang Harmony Quality: It is characterized by strong body, moderate fat and thinness, bright and moist skin color, moderate food intake, smooth bowel movement, clear vision, cheerful personality, flexible reaction, energetic, and strong adaptability. 2. Yang quality: it is characterized by moderate or thin body, slightly reddish or blackish color, or oily skin, large amount of food, easy to dry stools, easy to urinate yellowish red, usually fear heat and like cold, extrovert, easy to be impatient, energetic, and so on. 3. Yin quality: its characteristics are moderate or fat, easy to fatigue, pale and lack of Hua, smaller food, usually cold like warmth, introverted, timid and easy to scare, slow, slow reaction, energy, etc. Weak. Analyzing and comparing the phenomenon of physique can help to grasp the law of individual physique difference, which has positive significance to the diagnosis, treatment and prognosis of clinical diseases.