Recurrent fever in children may be caused by incomplete treatment of colds, acute gastroenteritis, urinary tract infections and autoimmune diseases. 1. Incomplete treatment of colds: If a child does not continue treatment after a cold has subsided, it may cause symptoms to recur, resulting in recurrent fever. 2. Acute gastroenteritis: children may have nausea, vomiting, abdominal pain, diarrhea and other symptoms, accompanied by fever, chills and other symptoms. It is usually caused by bacterial or viral infection due to unclean diet. 3. Urinary tract infections: If the child has recurrent fever and is accompanied by urinary urgency, frequent urination, etc., the recurrent fever may be caused by urinary tract infections. 4. Autoimmune diseases: autoimmune diseases can also appear in the performance of pediatric recurrent fever, common diseases are Kawasaki disease, systemic lupus erythematosus, juvenile rheumatoid arthritis. Pediatric recurrent fever, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.