The number of days you can eat after rectal surgery is related to the type of rectal surgery. Generally speaking, minor surgery for benign anorectal diseases can be eaten normally two days after surgery, and major surgery for anorectal can be eaten normally one week later. 1. Minor surgery for benign anorectal diseases: these surgeries include hemorrhoid surgery, anal fissure surgery, and rectal mucosal prolapse surgery, which generally have a better prognosis, and intestinal function is not easy to be affected or has little effect. In these types of cases, the ability to eat after surgery is related to the anesthesia. Generally speaking, you can eat fluids or semi-fluids after the operation, and you can eat normally on the next day. 2. Major anal and intestinal surgeries: these surgeries include radical resection of rectal cancer, which generally has a slower prognosis and will affect the intestinal function. Therefore, the normal eating time should be delayed so that the intestinal tract can recover. Normally, normal eating can be done one week after the operation. It should be reminded that patients should take medication as prescribed by the doctor after surgery in order to speed up the recovery. If they can eat normally, they should strengthen the nutrition, pay attention to the diet, and avoid spicy and stimulating food intake.