A 6-year-old toddler with a fever of 39℃ should be treated promptly with active physical and chemical cooling, as well as treatment of the cause of the illness. According to the cause of the analysis, if it is a bacterial infection fever should be antibiotic treatment, if it is non-infectious fever, need to follow the doctor’s advice to use targeted drugs or surgical treatment. 6-year-old children with a fever of 39 ℃, first of all, should be timely antipyretic treatment, follow the doctor’s instructions to apply antipyretic drugs such as ibuprofen suspension, acetaminophen, etc., supplemented with warm water to wipe the body and other physical cooling, can be effective in quickly lowering the body temperature. At the same time, the doctor will treat the child according to the cause of fever. If the fever is caused by bacteria, sensitive antibiotics such as cefixime will be used to fight infection. If the fever is non-infectious, such as leukemia can be treated with bone marrow transplantation; endocrine diseases such as hyperthyroidism should take anti-thyroid drugs, such as methylthiouracil, or surgical treatment. There are more reasons for a 6-year-old child to have a fever of 39 ℃, parents should pay attention to it and take the child to the hospital in time to clarify the cause and standardize the treatment. Drugs need to be used under the guidance of a doctor.