Cancer is a collective term for various types of malignant tumors, with a complex pathogenesis and many causative factors. However, research and retrospective analysis have found that the incidence of cancer is higher in certain special constitutions than in other groups. The Qi deficiency constitution, which is characterized by excessive exertion and frequent weakness; the Yang deficiency constitution, which loves to eat cold and raw food, and does not pay attention to keeping warm in autumn and winter, and often has weakness in the waist and knees and bloating; the Yin deficiency constitution, which is characterized by long-term smoking and irritability and anger; the Qi yu constitution, which is characterized by long-term depression and anxiety; the Phlegm damp constitution, which is characterized by uncontrolled diet and lack of exercise; and the Blood stasis constitution, which is characterized by long-term consumption of high-fat, high-calorie and cold food or long-term illness.