Patients who find that they still want to have a bowel movement before preparing for the colonoscopy will need to continue with bowel preparation, and if necessary, make a new appointment for the examination. Enteroscopy needs to be inserted through the anus and then traveled to the ileocecal region, and in the process of detailed observation of whether there are lesions, so enteroscopy needs to be carried out before the bowel preparation, generally need to take oral medication and drink more water, until the standard of the stool discharged for the watery and no fecal slag, at this time for enteroscopy can clearly see the intestinal mucosa, if the bowel preparation is not effective, then need to be carried out for a second examination. Therefore, before preparing for the colonoscopy, patients who still want to have a bowel movement are usually advised to continue the bowel preparation, and then have the examination after the bowel movement is complete and there is no desire to have a bowel movement. In addition, fasting is also required on the day of the examination, and fiber-rich foods should be avoided on the day before. It is recommended that patients who need to undergo colonoscopy go to the gastroenterology department of a regular hospital for detailed consultation.