Most of the headaches in children are related to the fever at this time, and most of the headaches can be relieved after the temperature is controlled. Fever is common in infectious diseases, such as bacterial, viral, mycoplasma and chlamydia infections, and the inflammatory response of the body, and high fever is the self-protection performance of the body. If the body temperature is higher than 38.5℃, it is recommended to give non-steroidal anti-inflammatory drug treatment such as ibuprofen, etc., and supplemented with physical cooling. If the fever is caused by an infectious disease, antibiotic treatment is required. It should be noted that if the child has fever, severe headache, accompanied by symptoms such as impaired consciousness, jet vomiting, and neck tonicity, he/she should be alerted to the presence of central nervous system infection, and should go to a specialized hospital for formal medical examination, blood sampling, laboratory tests, lumbar puncture, head CT, EEG, etc. to clarify the cause.