Clean up the intestinal tract, in the clinic generally take laxative bowel cleansing, enema method, according to the patient’s specific situation to choose the appropriate method. 1. Laxative bowel cleansing: taking laxatives to promote fecal discharge, commonly used in the clinic are polyethylene glycol electrolyte dispersions, drinking 2000-3000mL of water after taking the medicine, can also take mannitol, lactulose and other drugs orally after the bowel cleansing. Doing colonoscopy or do surgery before, generally take drugs to clean up the intestinal tract. 2. Enema: generally is the use of water or drugs into the rectum to soften feces, promote fecal discharge, generally used for constipation, defecation difficulties of such patients. It is recommended that the enema be carried out under the guidance of a physician, do not use your own medicine.