Recurrent low-grade fever in children without a runny nose, cough, or nasal congestion can be caused by viral infections, tuberculosis, or leukemia, and should be treated according to the cause of the illness. 1. Recurrent low-grade fever caused by viral infections (e.g., respiratory syncytial virus) requires antiviral treatment (e.g., ribavirin) in addition to antipyretic medications (e.g., acetaminophen). 2. Mycobacterium tuberculosis infection may cause recurrent low-grade fever as well as lethargy and night sweats. Anti-tuberculosis drugs (e.g., isoniazid, rifampicin, etc.) are needed for standardized treatment. 3. Leukemia and other malignant tumors can also cause recurrent low-grade fever, bleeding gums, enlarged liver and spleen lymph nodes and other symptoms, which need to be treated with chemotherapy or radiotherapy according to specific types. Recurrent low fever in children may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy. All of the above medications should be used under the guidance of a doctor, avoid self-medication.