Colorectal cancer can firstly be treated by endoscopic resection, though the treatment method still depends on the stage of colorectal cancer, which is more suitable for patients with early stage of colorectal cancer. Secondly, it can be treated by surgery, especially if the tumor has invaded the submucosa, surgery is a more correct choice. Besides surgery, colorectal cancer patients can also be treated with radiotherapy and chemotherapy.

The prevention of colorectal cancer is also related to its pathogenic factors: the first one is that patients with high-protein and high-fat diets should be properly controlled; the second one is that the factors damaging the mucosa of gastrointestinal tract, such as 3,4-benzopyrene, polycyclic aromatic hydrocarbons, especially foods containing nitrite, should be avoided as much as possible; the third one is that benign intestinal diseases such as colon polyps, etc., should be treated timely, and timely treatment can reduce the development of the tumor to a new form of colorectal cancer. The third is to treat benign diseases of the intestinal tract, such as colon polyps, timely treatment can reduce the development of it into colon cancer.