Diet for 1 to 15 days after colonoscopy should be determined according to the specific situation. If it is just a simple colonoscopy, you can have a normal diet after the end of the procedure; if you take biopsy or do treatment at the same time, you should first fast for 1 to 2 days, and then gradually return to a normal diet. After a simple colonoscopy, there is no effect and you can usually eat normally. If you have a colonoscopy with biopsy or treatment, you should fast for 1 to 2 days, then gradually go from liquid diet (clear soup, soymilk, milk, etc.) to semi-liquid diet (various kinds of congee, noodle soup, noodle soup, etc.), and then return to normal diet. During this period, the diet should be light and easy to digest, no greasy spicy stimulating food, to ensure balanced nutrition, which is conducive to recovery. Diet after colonoscopy depends on the specific situation, it is recommended to follow the doctor’s instructions to implement.