Fever is a common symptom in children. Due to the imperfect development of the immune system and the poor thermoregulatory function of children, it is easy to have recurrent fevers that do not go away or the temperature rises again after the fever has subsided. Recurrent fever in children is most commonly associated with recurrent respiratory infections in clinical practice, along with recurrent coughing and sore throat. If your child has such a problem, it is recommended to check the immune function, and then each respiratory infection needs to be treated thoroughly before stopping the medication. If the medication is stopped too early there is a chance that the pathogen has not been completely cleared and only temporarily relieves the symptoms, causing the condition to recur after stopping the medication, which can also lead to recurrent fever in children. Some disease foci are relatively hidden, and it is difficult for drugs to completely remove bacteria from the foci, so if the treatment is not complete, it may cause recurrence of the disease, manifesting as recurrent fever, such as tonsillitis, sinusitis, etc. The infection foci need to be completely removed, and drugs should be taken under the guidance of a doctor. If the child has pneumonia, especially severe pneumonia, the child will also have recurrent fever, which needs to be treated according to the child’s clinical performance combined with ancillary tests. Some special pathogens such as tuberculosis may also manifest as recurrent fever, and if necessary, the diagnosis can be clarified by completing relevant tests. Some non-infectious diseases, such as juvenile idiopathic arthritis systemic and hematologic diseases, may manifest as recurrent fever when the early manifestations are not very specific. In summary, children with fever should seek medical attention as soon as possible while controlling their body temperature, so that the doctor can determine the cause and provide targeted treatment.