Children with fever and no other symptoms need to be identified and treated. Fever without other symptoms can be caused by infectious diseases, autoimmune diseases, blood system diseases, etc., and should be treated according to the cause. 1. Infectious diseases: Infections that are not serious can cause fever and other symptoms may not be obvious, and reasonable ways to lower the temperature should be taken in time. If the temperature is below 38.5 degrees, physical cooling can be carried out; if the temperature exceeds 38.5 degrees, ibuprofen, acetaminophen and other medicines can be taken under the guidance of the doctor to lower the temperature. Viral infection, generally supportive treatment; combined with bacterial infection, need to use sensitive antibiotics for anti-infection treatment, such as cefixime. 2. Autoimmune diseases: autoimmune diseases have abnormalities in the immune system and may cause fever, which need to be diagnosed and treated for the primary disease. 3. Blood system diseases: such as anemia, acute leukemia, etc. can also lead to symptoms of low fever, need to be treated for the original disease. There are many reasons for a child to have a fever without other symptoms, so it is recommended to go to a professional pediatric hospital for a clear diagnosis and targeted treatment.