Four-year-old babies often fever, to find the cause of the fever, but also due to the relatively poor immune function of four-year-old babies, there are often fever, the specific treatment is as follows: 1, parents should be based on the environment, temperature, and at the same time, according to the amount of baby activity, according to the child’s condition to give clothing increase or decrease. In the case of high activity, clothing should be reduced appropriately, and in the case of high ambient temperature, parents should not overdress the baby to avoid wind chill after sweating, causing fever. 2, if the baby is often feverish because of the decline in immune function, in daily life, parents should give the baby a balanced and reasonable diet, ensure sufficient sleep, and appropriate physical activity, which is conducive to strengthen the immune system. At the same time, under the guidance of a doctor, you can also give the application of immunity-boosting drugs to improve your baby’s immunity and avoid frequent fevers.