Clinically, there is no best solution for children with recurrent high fever of 39 degrees, we need to choose the appropriate antipyretic method according to the degree of elevated temperature of the child, such as physical hypothermia, oral medication. It is also important to treat the cause of the fever. Fever is a common symptom in childhood. For children with fever, the speed of temperature recovery is related to the state of the disease and the choice of the correct antipyretic method, and there is no best method. For children with fever but body temperature <38.5 ℃ can use warm water on the child's forehead, reduce clothing and other physical methods to reduce temperature, encourage children to drink more water, some children's body temperature can gradually decline; for children with body temperature ≥38.5 ℃ need to use antipyretic drugs such as ibuprofen, acetaminophen and other antipyretic treatments under the guidance of a doctor. At the same time for the cause of the treatment is also very important for the recovery of body temperature, such as bacterial infection caused by respiratory tract infection, need to actively use antibacterial drugs such as cefaclor, cefuroxime and other anti-infective treatment. In case of rheumatic immune diseases, immunosuppressants such as methotrexate should be used for treatment; in case of hematological tumor-related diseases, chemotherapy, bone marrow transplantation and other treatments are needed. All of the above drugs should be used under the guidance of a doctor, avoid self-medication. It is recommended that children with fever should seek prompt medical attention and be evaluated for treatment by a specialist.