Coffee enema is said to be a way of anti-cancer and health preservation, but it has not been proved effective by the medical community at present. Most people who support coffee enema have benefited, such as beauty salons, health centers and hospitals with unknown qualifications. Consumers need to be cautious. At present, several cases of adverse reactions caused by coffee enema have been reported [source needs to be provided]. Please don't try before it is proved to be effective by the medical profession. The method of coffee enema is similar to general enema, which can clear the bowels and relieve constipation, but the enema used is coffee. During the First World War, coffee enema was used by the German army to relieve patients' pain because of its analgesic effect. Later, two medical college professors in Germany made coffee enema experiments with mice, and found that it not only can clear the intestines and relieve pain, but also can promote the detoxification of the liver, thus laying a medical background for coffee enema.