Persistent low fever in children is usually the result of disease, usually caused by chronic infections, blood system disorders, etc. It can also be caused by the ineffectiveness of fever treatment due to improper medication. Parents should promptly take their children to the hospital for medical consultation to clarify the specific causes and then give scientific and standardized treatment measures. Common causes and treatment 1, chronic infection: children with low immunity, when the body is infected with bacteria or viruses there will be an inflammatory response resulting in fever, especially the development of chronic inflammation, such as sinusitis, otitis media, tuberculosis, etc., will cause the body to produce a sustained febrile response, resulting in a low fever does not go away, pay attention to the active treatment of the original disease, for children with viral infections, you can take antiviral drugs. Bacterial infection resulting in low fever, can take penicillin class or cephalosporin class anti-inflammatory drugs treatment, pay attention to the medication to be under the guidance of a doctor; 2, blood system diseases: such as leukemia children also have more persistent low fever phenomenon, the first should be a blood test, the initial determination of the child has no potential risk of blood disease, and then bone marrow aspiration examination; 3, improper medication: due to improper medication resulting in disease is not targeted to be solved So the child maintains a persistent low fever, such as children suffering from respiratory infections, did not apply erythromycin or azithromycin for Mycoplasma pneumoniae, but gave the child the application of cephalosporin, resulting in the general effect of treatment, the symptoms have not been relieved, the application of various types of drugs can not achieve the effect of reducing fever, or resume low fever after stopping the drug, need to promptly seek medical attention. Precautions 1, when the child’s low fever persists, parents can use warm water to wipe the child’s body, to give the child more warm water, or drink light salt water, to help the child replenish body fluids and maintain the water-electrolyte balance; 2, pay attention to more rest, avoid overexertion; diet pay attention to eat light, easy to digest food. This can effectively prevent the aggravation of the disease.