Children with fever for no reason, no runny nose, no cough, first of all, symptomatic treatment, such as reasonable antipyretic, followed by a clear cause of fever. 1. Symptomatic treatment: for children with fever only, reasonable antipyretic treatment should be carried out according to the degree of fever, to reduce the discomfort caused by fever, such as the use of ibuprofen or acetaminophen for antipyretic treatment for a temperature of more than 38.5 degrees Celsius, and the use of lukewarm water baths, antipyretic patches and other physical cooling can be used for a body temperature of not more than 38.5 degrees Celsius. 2. Define the cause of fever and treat the cause: for example, in some infectious diseases, such as acute suppurative tonsillitis in children, there may be fever, but no runny nose and no cough, examination of the tonsils can be seen purulent secretion attached, such children usually need to use drugs such as cefaclor anti-infective treatment. Similar manifestations can be seen in many diseases, such as infectious mononucleosis, juvenile idiopathic arthritis, leukemia, etc. Fever alone can be the main manifestation. It is recommended to consult a specialist to evaluate the condition and guide the treatment.