Drinking milk after intestinal polyp surgery is not recommended. Intestinal polyp surgery is usually removed under the colonoscope, there will be trauma after the removal of polyps, there may be exudation or blood seepage, etc. Drinking milk after surgery may cause patients to have diarrhea. Because some patients are lactose intolerant, diarrhea can aggravate the pain in the abdomen, and sometimes may also aggravate the bleeding of the intestinal polyp wound. It is generally recommended to drink warm water at the beginning, and then start with a liquid or semi-liquid diet, mainly including rice soup, thin rice, noodles and other light meals.