The following measures can be used to deal with fever in children. First, children can be given physical cooling. If a child is given a warm bath or a warm bath, the body temperature will change with the change of the surrounding temperature, which is caused by the skin heat dissipation effect due to the young age of the child. Second, children can be given timely treatment for the cause. If the fever is caused by various infections, timely anti-infection treatment is required. If the fever is caused by influenza virus, Oseltamivir can be given to children. If it is caused by mycoplasma infection, erythromycin can be applied to fight the infection. Finally, if there is no improvement after symptomatic treatment, prompt medical consultation is recommended.