ZHENG SHU Zheng Shu, scientific director of Cancer Institute, Zhejiang University. Main Academic Appointments: standing board member, Chinese AntiCancer Association; standing member, Committee of Chinese Medical Society; fellowship of American College of Surgery; council member,  International Society of University Colon & Rectal Surgeons; chief editor of Journal of Practical Oncology; editor of World Journal of Gastroenterology,The ChineseGerman Journal of Clinical Oncology, etc. Main Academic Viewpoint: Established the Model for CRC mass screening in China, and the model has been confirmed by mass population. According to the populationbased cancer registry in Haining County, ageadjusted incidence and mortality from rectal cancer decreased  by 41% and 29%, respectively, from 1977-1981 to 1992-1996. Observed cumulative 20year rectal cancer incidence was 31% lower than expected in the screened group; mortality due to rectal cancer was 18% lower than expected in the screened group. It was be proved that Mass screening and following with endoscopy and polypectomy can reduce incidence and mortality of rectal cancer among general population in China.