For children with recurrent fever for five days, the following measures can be used to relieve the fever: First, gammaglobulin can be administered to the child. If the fever is very high and lasts for five days, and the child has redness and swelling of the skin and lymph nodes, as well as prune tongue, the child should be considered to be suffering from Kawasaki disease, which can also cause coronary artery dilation, and should be treated with gammaglobulin. Next, erythromycin can be administered to the child. If the cause of recurrent fever is due to chlamydia or mycoplasma infection, erythromycin should be applied in time to control mycoplasma and chlamydia, and the fever will naturally subside in children.