The principle of antipyretic patches is physical cooling, for fever patients can be used, antipyretic patches are now widely used in pediatric antipyretic treatment, because of its convenience and efficacy, its main active ingredient is polymer gel, purified water, glycerin, peppermint, etc., with a cooling, hydration and heat absorption, whether for high fever or low fever patients can play a role. In addition to a very small number of patients with allergic reactions, most well tolerated, for low fever can be used, high fever can be in the carotid artery, femoral artery or large vertebrae and other parts of the patch, can better play the role of antipyretic. In the use of the need to pay attention to antipyretic patches can only play a physical antipyretic effect, and can not have a therapeutic effect on the primary disease, if the application is still persistent after the fever should be promptly consult a doctor, to give the cause of the treatment.