Normally, an enema does not hurt, but if you suffer from anal fissure or hemorrhoids, it may cause some pain. At present, the enema operating instruments used in medicine have a soft enema head, and some lubricant will be smeared on the enema head before inserting it into the anus, so it will not hurt under normal circumstances. However, if the patient has anal fissure or hemorrhoids, etc., then there may be some pain when the enema is inserted. An enema is a quantity of liquid medication that is poured into the colon from the anus through the rectum to clean the intestines or provide medication or nutrition to the intestines for the diagnosis and treatment of disease. The enema usually takes about 10 minutes and some patients will have adverse reactions. Therefore, it is recommended to go to a regular hospital to do, the doctor will do a good job of care, such as slow release of liquid, will be real-time detection of blood pressure, heart rate, body temperature and so on. If nausea, dizziness cold sweat and other symptoms occur in the enema, you should promptly inform the doctor, slow down or stop the enema.