After the colonoscopy, the stomach will generally be painful 1-2 days, this pain will gradually reduce over time, or even disappear, mainly when entering the colonoscopy, the intestine into a large amount of gas, as well as the mirror itself on the intestinal wall mucosa a kind of stimulation, will cause pain, especially after doing the colonoscopy polyps under the removal and take the pathology of the case, the pain may be aggravated 1-2 days. Therefore, after the colonoscopy must do regular diet, do not eat spicy and irritating food, should be mainly liquid or semi-liquid food. If a small amount of fresh blood stool is found during bowel movement, you can observe it minutely, and if the amount is not very large, you can treat it symptomatically. If the amount of fresh blood stool is relatively large, you should go to the hospital for routine examination and even apply hemostatic drugs.