Rectal enema operation is mainly used for preoperative bowel cleansing or treatment of diseases. The operation process is mainly through the anal tube, the soap water or saline, using gravity, into the rectum inside. First of all, according to the purpose of the enema preparation of the appropriate solution, clinically commonly used solutions are soapy water or saline. Secondly, the patient is placed in the left lateral position with knees bent to expose the back, the enema solution is placed high up to expel excess gas from the anal canal, and then the anterior end of the anal canal is lubricated with liquid paraffin. Finally, the anal tube is gently inserted into the rectum, and the enema solution is slowly poured into the rectum. In the process of enema, if the enema liquid no longer flows into the rectum. Then the anal tube needs to be gently turned to avoid blockage. After the end of the enema, gently pull out the anal tube and wipe the area around the anus clean. If the patient in the process of enema panic, chest tightness, pallor to immediately stop the enema, immediately to the hospital or hospitalized patients to inform the doctor.