Those with normal colonoscopy and no related digestive discomfort symptoms can be rechecked once in 5 years. As an important means of examination for intestinal diseases, colonoscopy can detect and clarify the type and extent of lesions at an early stage, and determine the treatment effect and prognosis. Depending on the specific situation, the colonoscopy review cycle is different. If the age of people older than 50 years old, it is recommended to review once every 3~5 years; if there is a family history of intestinal tumors, it is recommended to review once every 1~3 years; if polypectomy is performed, it can be reviewed once every 1~2 years; if there is ulcerative colitis, Crohn’s disease, etc., it can be reviewed once every 1 year. If the colonoscopy is normal, and no symptoms of digestive discomfort, you can review the colonoscopy once after 5 years. For the question of how often the colonoscopy is normal, it is recommended to consult a doctor.