There are many reasons for pediatric fever without cough and runny nose, such as the early stage of viral infection, blood system diseases, urinary tract infections, meningitis and other diseases. 1. Early viral infection: generally refers to upper respiratory tract infection. Viral infection of the upper respiratory tract, the early general symptoms are mild, there may be no coughing, coughing up sputum, runny nose and other manifestations, only the symptoms of fever. 2. Blood system diseases: such as leukemia, lymphoma, with unexplained fever as the typical clinical manifestations, which may be accompanied by lymph node enlargement and other manifestations. 3. Urinary tract infection: refers to pathogenic bacteria infecting the urethra causing urinary tract infectious diseases, typically manifested as frequent urination, urinary urgency, painful urination, difficulty in urination, etc., such as acute pyelonephritis, fever and other manifestations can occur, usually without coughing, runny nose phenomenon. 4. Meningitis: mostly caused by bacterial or viral infection. Clinical manifestations of fever, headache and other manifestations, severe cases can appear jet vomiting, impaired consciousness and other symptoms, but no cough and runny nose and other manifestations. In short, children with fever without cough and runny nose should go to the hospital in time to get a clear diagnosis as soon as possible.