Saline enema can lower the temperature. Saline is saline, can take away part of the body’s heat, to achieve the purpose of cooling, is commonly used physical cooling, can not treat the disease, cooling fast, and the drug can be instilled into the intestinal tract, easy to absorb the effect of the drug, but to be operated in the professional medical personnel treatment, such as intestinal injuries, intestinal perforation, and other diseases are prohibited to use. Children if you can take oral antipyretics, try not to use enema cooling, because cold saline on the intestinal tract has a certain degree of stimulation, destroying intestinal flora. In addition, adults with cardiac insufficiency and pregnancy and other unstable diseases are not recommended to use saline enema. If you have a fever, consult a doctor in time to identify the cause of the disease and make a clear diagnosis, and guide the treatment method of cooling, do not take the liberty to deal with it, so as not to cause adverse consequences.