Enema is not a needle, is injected from the patient’s anal canal into the enema liquid, to achieve the role of intestinal cleansing, treatment of disease, and even diagnosis of disease. Before the enema, let the patient to the left lateral position or supine position to expose the buttocks, the enema bag hanging in the patient’s anus above 40-60cm, exhaust the enema bag connected to the gas in the tube, close the tube clamp, and then lubricate the front of the anal tube, separate the patient’s buttocks with their hands, expose the anus, the other hand will be gently inserted into the anus, the rectum of the anal tube, about 7-10cm for adults, about 4-7cm for children, open the tube clamps until the completion of the enema. . There are types of enemas such as non-retention enemas, retention enemas, and barium enemas. Unpreserved enemas use warm saline, soapy water, and corkscrew to aid in defecation; preserved enemas use some therapeutic medications; and barium enemas use a barium sulfate suspension to perform an enema, followed by an X-ray examination. If enema is needed in the clinic, please actively cooperate with the doctor, do not operate on your own to avoid causing adverse effects.