Constipation enema needs to be placed in a good position, inserted into the laxative tube, filled into the enema, retained for a period of time after the enema for defecation. 1. Positioning: Constipation patients need to take the left side lying position before preparing for enema, and then the knees will be bent to expose the buttocks. 2. Insert the lubrication tube: after the constipated patient’s position is set up, he needs to lubricate the anal tube and the anal area with paraffin oil, and then insert the anal tube into the rectum, and pay attention to the gentle movements when inserting the anal tube. 3. Into the enema liquid: to be inserted into the anal tube and then open the enema clamp, the enema liquid slowly into the rectum. Generally after the enema into the body, the patient will have a bowel movement, at this time you can lower the position of the enema, and let the patient take a deep breath. If all the enema liquid into the intestinal lumen, you need to close the enema clamp, and then wrapped in paper towels after pulling out the anal tube. 4. Retain the enema liquid for a period of time after defecation: patients need to retain the enema liquid in the intestinal tract for 10 to 15 minutes after the enema before defecation. It is recommended that patients with constipation need to go to the hospital to find a health care provider for enema, to avoid unauthorized enema.