First, the patient needs to lie on his or her side, with one leg straight and the other leg flexed, and the buttocks elevated, with an absorbent bag placed underneath the buttocks to prevent the enema from flowing onto the bed. Second, choose the appropriate enema solution, such as saline, paraffin oil, soapy water, etc., according to the patient’s physical condition and the type of disease to decide. Third, the enema solution is about 300-500mL, but the choice of the specific amount needs to be decided according to the specific judgment of the doctor. After the enema, the patient should try to hold the anus, and then go to the toilet for defecation when they can’t hold it, to achieve better results. If there is any obvious discomfort after defecation, you need to consult with a doctor or nurse as soon as possible.