Children with fever for four days have been recurring fever, usually belong to infectious fever, such as viral infections, bacterial infections, etc.. But it may also be non-infectious diseases caused by fever, such as systemic lupus erythematosus, Kawasaki disease, etc., need to be clearly diagnosed to give targeted treatment. 1. Infectious fever: children with fever for four days has been recurring, mostly related to infections, such as viral infections caused by fever generally do not need to take antiviral drugs, but if the influenza virus, you need to cooperate with antiviral drugs, such as oseltamivir. If there is a bacterial infection, you can use some antibiotics under the guidance of the doctor, such as cefixime and other treatments. 2. Non-infectious fever: such as systemic lupus erythematosus, Kawasaki disease, leukemia, malignant tumors, etc. may cause recurrent fever in children, need to be clearly diagnosed to give targeted treatment, such as hormone suppression of immunity or chemotherapy, surgical resection, etc.. In addition, if the child’s fever temperature is not more than 38.5 degrees, you can take the head of the antipyretic patch and other physical cooling treatment, if the temperature is more than 38.5 degrees, you can take ibuprofen and other antipyretic drugs under the guidance of the doctor. If the child has a fever for four days or persistent fever can not be relieved, you should go to the regular hospital in time, to clarify the cause of the disease, under the guidance of the doctor for treatment.