Children with headaches and fever are often seen in upper respiratory tract infections, central nervous system diseases and other conditions. 1. Upper respiratory tract infections: In addition to headaches and fever, upper respiratory tract infections usually cause coughs, sore throats, muscle aches, runny noses and other symptoms. 2. Central nervous system diseases: children with headaches and fever may also be due to central nervous system diseases such as meningitis, myelitis, etc., the patient is usually accompanied by vomiting, dizziness, drowsiness, poor mental health and other symptoms. There may also be other causes of headache and fever in children, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then carry out targeted treatment or treatment with the help of the doctor.