Enema is a common clinical treatment, but also preoperative preparation, from the treatment mode enema can treat intestinal inflammation, common ulcerative colitis or colorectal inflammation, through the use of enema will be sent directly to the affected area of the drug, conducive to the absorption of local tissues and the choice of enema, the drug for the traditional Chinese medicine boiled broth or antibiotics. A thin tube is used to penetrate deep into the rectum, and the medication is pumped under pressure from the other end of the suction tube into the intestines, where it is retained for a certain period of time and then expelled, twice a day. In terms of bowel preparation, surgical procedures as well as intestinal endoscopy require good bowel preparation in order to facilitate surgical visualization or surgical exploration, and the enema of choice is usually an electrolyte dispersing solution, to avoid electrolyte disorders while cleaning the bowel.