Thirty years ago, Japan started to research on cancer curing methods and kept breaking through with innovations, among which specialized cancer checkups (such as Tokyo Metropolitan Nishidai Medical Checkup Hospital) and cancer specialized treatment hospitals (such as Cancer Research Ariake) have long been known globally. In Japan, the three steps of cancer screening, cancer treatment, and cancer recurrence prevention and treatment have been gradually formed in today's society, and the significance of early detection and active treatment of cancer is popularized by TV, magazines, and new media, and is endorsed by many domestic and foreign medical schools and research institutes. Japan's thirty years of dedicated research on cancer has resulted in a world-leading cancer prevention and treatment system that has made Japan one of the world's leading countries in the field of cancer treatment, and has attracted a large number of patients from abroad to receive treatment and checkups.