There are various screening methods for colorectal cancer.

Colorectal cancer is one of the most common malignant tumors in human beings, and its incidence ranks third in the world. With the improvement of Chinese people's living standards and the changes of living habits and dietary structure, in recent years, the incidence of colorectal cancer in some developed first-tier cities in China has risen linearly, which is close to that of developed countries in Europe and the United States. the mortality rate of colorectal cancer in China has ranked fifth in malignant tumors, and its incidence began to rise at the age of 40 and reached a peak at the age of 60 to 75.

Its incidence is increasing year by year. Screening for colorectal cancer is conducive to early diagnosis and early treatment, and reduce mortality. However, different from other tumors, there are a variety of screening methods for colorectal cancer, which involves the formulation of public health policies, and the titer ratio must also be taken into account, resulting in a lack of global understanding of which methods are the most effective.