After the child has had a fever for three days, if the fever does not go away and does not show any signs of improvement after treatment at home, it is necessary to take the child to the hospital for further detailed examination, so that the doctor can clarify whether the current treatment plan is reasonable and the actual condition of the child, and further give the cause of the disease and symptomatic treatment. If the child has had a fever for three days, but the temperature of the fever and the frequency of the fever have improved, the disease has a course. In this case, if the child shows signs of improvement, the child can continue to be treated for the original cause of the disease, and at the same time be actively treated according to the temperature. High fever above 38.5℃ can be treated with oral antipyretic drugs, such as acetaminophen or ibuprofen pellets. In the case of low fever, physical cooling can be done by drinking more water, wiping with warm water or using antipyretic patches, etc. The child’s temperature can be reduced to normal. At the same time, the child can be given back spinal points of chiropractic, and Chinese medicine massage therapy, or let the child move more to play a role in reducing fever.