Patients with constipation who want to expel stools quickly can apply enemas. Most of the enemas used are soapy water, saline, and also hypertonic saline and paraffin oil. The method and steps of enema are as follows: 1. Prepare all the materials, explain to the patient, ask him to take the left lateral position after urination, bend his legs and expose his buttocks; 2. Place the enema tube on the shelf and lubricate the anal tube, after clamping the anal tube, insert the anal tube gently into the rectum, usually 5-10cm, after releasing the clamp, make the solution slowly into the rectum; 3. After the liquid has finished flowing, the anal tube can be removed and the patient can defecate after lying down for 5-10 minutes. Generally, patients can quickly pass stool, but when the enema needs to pay attention to the temperature and flow rate of the enema, so as not to cause uncomfortable symptoms. If the patient is discharged with enema fluid, the effect of enema is not achieved.