1. Fasting: Fasting for 6-8 hours or longer after operation, depending on the size of polyp and wound condition. Then the advanced liquid diet is transitioning to semi-liquid food, soft food and general food.
2. liquid food: if the patient has no discomfort, liquid food can be given the next day, 50~ 100ml each time, once every 2 hours.
3. On the third day, you can give all-liquid or semi-liquid food. The dietary principle is non-irritating food, small amount and multiple meals, each time 100~200ml, 6-7 meals a day. Choose foods that are not too sweet or too sour, such as egg soup, vegetable soup, lotus root starch, millet soup, etc.