Baby always fever common reasons are: 1, the baby neuromodulatory system is not well developed, can not be timely with the temperature of the external environment to accurately regulate the temperature of the body, wear too thick, high indoor temperature will affect the baby’s body temperature, so that parents mistakenly think that the baby fever throughout the day. 2, the baby’s own immunity is relatively low, easy to occur upper respiratory tract infections, urinary tract infections and the occurrence of Systemic inflammatory response, fever is the most common typical symptoms. 3, the baby has a lot of time during the day in the milk, when the baby sleeps after the metabolism is still very strong, coupled with the baby sleeps a lot of time a day, and so fall asleep after the body’s heat will be dissipated, the baby’s body surface temperature will increase.