Enema is mainly inserted through the anus into the anal canal, the enema bag of saline combined with lubricants or soapy water, corkscrew, etc., pressurized enema to the rectum and colon, stimulate intestinal peristalsis, lubrication of the intestinal tract and soften the feces in order to promote the discharge. After the enema, you can choose the head-down hip-high position for 5-10min, to avoid the enema liquid outflow, so that the enema liquid and feces fully contact, soften, and stimulate intestinal peristalsis, in order to achieve a better enema effect. Enema should pay attention to control the speed of the enema should not be too fast, the enema liquid from the anus is best less than 30cm, the pressure is too large, it will increase the stimulation of the intestinal mucosa, which may lead to feces sprayed out during the enema. Enema can relieve constipation, but can not rely too much, improve constipation or through the adjustment of diet and change lifestyle habits. You can pay attention to your diet, eat more food with high dietary fiber, and develop the habit of regular bowel movements. You can also take some short-term medications to improve constipation, such as lactulose oral solution, mosapride, linaclotide and so on.