In general, the removal of intestinal polyps under electronic colonoscopy is a minimally invasive procedure. If EMR is performed after surgery, that is, submucosal resection, it is recommended to fast for 24 hours, and after 24 hours, you can eat liquid with less residue and slowly change to soft food, but pay attention to eating less and more meals, and do not eat greasy, spicy and stimulating food. If it is only APC treatment, it is relatively less traumatic, so you can consider eating less residual fluid 12 hours after surgery, with appropriate hydration, and do not eat coarse fiber food and greasy food.