April 15-21 is the 21st National Cancer Prevention and Treatment Awareness Week in China. Data show that the incidence of tumors in China is growing at a rate of 10% per year, with an average of 6.4 people suffering from cancer every minute, and the best way to treat malignant tumors is early detection and early treatment. Different age groups have different focus on cancer prevention, and people with high incidence of cancer should be screened for cancer prevention.