A baby with a recurring fever for more than ten days is serious and needs to be taken to the hospital quickly for hospitalization. Fever for such a long time, the cause of fever is more difficult to determine, need to check a lot of items. First of all, the most common cause of recurrent fever is infection, often chronic infection, need to check the blood routine, C-reactive protein and Mycoplasma pneumoniae, if there is a bacterial infection, need to use antibiotics intravenous drip treatment. In the case of viral infections, an IV drip of xylazine or ribavirin may be used. If the infection is Mycoplasma pneumoniae, it can be treated with an IV drip of azithromycin or erythromycin. In addition, the fever for such a long time, but also can not rule out lung infection, intracranial infection, some special infections, tuberculosis, malignant tumors or rheumatoid immune system diseases caused by the fever, the examination is often difficult, need to give the child to do a clear examination, according to the cause of the targeted treatment, is more scientific, otherwise it will delay the child’s condition.