If it is only the day after the examination and the examinee does not have any abdominal discomfort, then any diet can be taken. If the examinee still has lower abdominal flatulence and hidden pain on the second day of the examination, it is recommended that it is best to take easy-to-digest rotten noodles and congee. It is recommended not to eat soy milk or dairy products, as this may aggravate the symptoms of flatulence. In case of therapeutic colonoscopy, such as submucosal dissection or submucosal resection, it is recommended that the next day it is best to eat only fluid, and to eat liquid or thin rice without any complications appearing. If there are still discomfort symptoms such as abdominal pain or blood in the stool on the second day of colonoscopy treatment, you are in a fasting state on the second day. Therefore, the doctor will give a detailed account of what to eat on the second day of the colonoscopy according to the specific operation of the patient after the examination.