Intestinal tumors should be prevented by paying attention to diet, quitting bad habits and tumor screening. 1. Pay attention to diet: the occurrence of intestinal tumors may be related to nitrite, so try to eat less pickled, smoked, chemical preservatives treated food, and suggest eating more coarse grains and fresh vegetables and fruits. 2. Quit bad habits: Long-term smoking, drinking, staying up late and other bad habits may affect the health of the body, but also the cause of the occurrence of cancerous diseases, therefore, quitting bad habits is also one of the important measures to prevent intestinal tumors. 3. Tumor screening: Early detection and early treatment are recommended for tumor diseases, and tumor screening is also one of the measures to prevent intestinal tumors in order to avoid tumor deterioration. Patients with intestinal tumors are advised to pay attention to diet, quit smoking and drinking, and go to the hospital in time for reasonable treatment under doctor’s examination.