Children's low fever and headache may have something to do with their constitution. Some children are vulnerable to external viruses when they are weak. The child's low fever headache is caused by upper respiratory tract infection. Parents should check whether there are other symptoms besides low fever and headache, such as cough, runny nose, sneezing, etc. At this time, no injection or infusion is allowed, and parents can give their children drugs to treat colds, such as paediatric paracetamol, huang namin granules. If the child has a low fever and headache all the time, he needs to go to the hospital in time to avoid delaying his illness. He needs to pay more attention to his diet at ordinary times, let the child eat fruits and vegetables, and do more outdoor sports and sunbathing, which can not only enhance the child's immunity, improve his physical quality, and enhance his resistance to germs.