Whether the colonoscopy was done last year or not needs to be done this year needs to be analyzed according to the patient’s specific situation, such as patients with milder symptoms can be done every 3-5 years, such as more serious patients are recommended to be reviewed again. In the case of milder conditions, such as in last year’s colonoscopy found that the intestinal tract without foreign bodies is very clean, the intestinal tract is very rosy, etc., in this case, the interval of 3-5 years and then review can be. For more serious patients, such as last year found that the intestinal ulceration, long intestinal polyps, this type of situation even if last year did colonoscopy this year also need to check again, to see whether the status of the intestinal lining is better, and to make relevant measures to achieve full recovery. If the patient did colonoscopy last year, whether to do it this year, it is recommended to go to the hospital to consult the relevant doctors, under the judgment of the doctor whether to do.