Fever, if not particularly severe, still has certain benefits. An elevated body temperature often indicates that the human body has good responsiveness and a certain resistance to disease. The degree of fever, if not particularly serious, is a physiological defense response of the body to resist disease. The white blood cells in the body will increase, antibody production will be more active, the metabolic rate of the body will increase, the detoxification capacity of the liver will be enhanced, and the metabolism of substances will speed up, which can make the patient’s resistance improve, so these changes are conducive to the elimination of disease-causing factors, and these are the benefits of fever. However, more serious fever can also bring more harm to the human body, especially for younger children, high fever can easily lead to the occurrence of febrile convulsions, especially when the body temperature is greater than 39 degrees is prone to febrile convulsions, which can produce a certain degree of damage to the child’s brain function or brain cells, which is very unfavorable.