Doing colonoscopy feel not pull clean can be enema, take laxatives, drink a lot of water and other remedies. 1. Enema: before the colonoscopy found that the fecal matter is not discharged, is the bowel preparation is not perfect performance, you can apply glycerin enema, saline enema, etc., can quickly and effectively clean up the fecal matter left in the intestinal tract. 2. Taking laxatives: when there is fecal residue in the intestinal tract before colonoscopy, you can take magnesium sulfate injection, polyethylene glycol electrolyte dispersal and other drugs with strong diarrhea, so that the stool can be discharged as soon as possible in a short period of time. 3. Drink a lot of water: Drinking a lot of water can play a certain role in flushing the intestinal tract, accelerate intestinal peristalsis, and help the discharge of fecal residue. All of the above drugs should be applied under the guidance of a physician, and should not be used without authorization.