With its high efficiency and reliability, the ambulatory surgery model has become the mainstream surgical mode in developed countries such as Europe and America, which can effectively shorten the waiting time for treatment, reduce the average length of hospital stay, and reduce the economic burden. It is an innovation of the treatment mode. A good medical concept can have the effect of promoting medical work, should be encouraged to carry out, so it can be better convenient to let the people go to a doctor, get safe and effective treatment, prompt medical service level, improve the people"s hospital, improve social satisfaction, build a harmonious doctor-patient relationship. This article discussed the application of the ambulatory surgery model in the department of gastroenterology from three aspects: the general situation of the new perioperative management pattern, the practice of endoscopic polypectomy of large intestine and the prospect of future work.