If the baby has a low fever is likely to be a symptom of many diseases, the following are the reasons why the baby’s low fever does not go away. 1, poor resistance: If the baby often has a low fever, it is likely that the reason is that the baby’s resistance is poor. Easily infected, and infection is not easy to cure, poor baby resistance to enhance the baby’s resistance, more take the baby out to exercise, more sunshine, enhance the baby’s own immune system, will reduce the number of times and time the baby is sick. 2, infection: if the baby is infected or healed after the infection during this time, are prone to such phenomena. Especially if the baby has recently had an acute infectious disease, due to the control of body temperature of the nerve center has not yet recovered, very easy to produce a low fever does not go away, like respiratory mycoplasma infection tuberculosis bacillus infection can be manifested as a low fever does not go away. 3, non-infectious diseases: the baby appears hypothermia also exists in blood diseases such as leukemia immune system such as SLE and other diseases can show hypothermia does not subside, the baby has a low fever has not subside must actively go to the regular hospital to find a doctor to clearly diagnose, only a clear diagnosis is possible medicine to the disease. Parents should take timely measures to help their babies recover their normal body temperature after finding similar phenomena.