Fever is a pathological phenomenon in which the body becomes feverish due to viral or bacterial invasion, which is reflected clinically as a higher than normal body temperature. A high fever is a degree of fever, referring to an axillary temperature between 39.1°C and 41°C, which is the body’s systemic response to pathogenic factors. Whether a girl or boy has a high fever, should not be handled by themselves, should be promptly sent to the hospital, under the diagnosis of the doctor to clarify what causes the fever, the cause, symptomatic treatment, and the following methods to assist in reducing fever: 1, keep the indoor air circulation, if conditions can maintain the indoor temperature between 25 ℃ -27 ℃. 2.If the child’s body is warm and sweating all over, it means that he/she needs to dissipate heat, so he/she can take off excessive clothing to avoid affecting the body’s heat dissipation. 3, warm water wipe: when high fever occurs, parents can use a towel dipped in about 37 ℃ of warm water, wipe the child’s forehead, armpits, palms, feet and other parts of the physical cooling. 4.Drink more water: Water has the function of regulating temperature, so drinking more water during fever can lower the body temperature and replenish the water lost in the body in time. 5, the use of antipyretic drugs: can be under the guidance of a doctor reasonable use of antipyretic drugs, can effectively regulate the body temperature central function, relief of fever and analgesia, while paying attention to the patient’s condition at any time during the administration of drugs.