Abstract: Abstract: Colorectal cancer is one of malignant tumor disease that seriously threaten human health. Its global morbidity and mortality rank the third and second respectively. Screening for colorectal cancer is of great significance for early detection and treatment of colorectal cancer. Screening for colorectal cancer began in Germany and other developed countries in the 1970s to reduce the incidence and mortality of colorectal cancer. Screening for colorectal cancer was also carried out in some areas with the high incidence of colorectal cancer in China in 1977. In recent years, screening for colorectal cancer has also been carried out in Tianjin, Shanghai and other large cities. This article reviews the current status of international and domestic colorectal cancer screening project, aims to explore the significance of colorectal cancer screening in reducing the morbidity and mortality of colorectal cancer and summarizes the impact of noninvasive colorectal cancer screening methods on screening. Through the analysis, the author believes that the national health plan, popular science publicity, medical insurance coverage, effective monitoring mechanism and appropriate screening methods are important factors affecting the screening of colorectal cancer.

Key words: Colorectal cancer screening, international status, domestic status, screening methods, review