In everyday life, people can not avoid the effects of carcinogens (tobacco smoke, poisoned food, non-standard Chinese consumer goods ...); These germs increase the incidence of cancer. According to reliable sources, cancer is the second leading cause of death in the disease pattern in Vietnam and in the world. Therefore, the national cancer prevention program was launched and the cancer prevention campaign nationwide was launched. The early detection of cancer in the community is something that scientists have long been aiming for, as well as prophylaxis, early detection will provide effective treatment, reduce mortality , repels cancer and reduces the cost of treatment.