Infants four months fever to thirty-eight degrees can be dealt with through physical cooling and other ways. 1. Physical cooling: (1) infant four months fever to 38 degrees can use warm water soaked towel after wiping the baby’s body, focusing on wiping the armpits, elbows, neck, groin and other folds of the skin, can be effective in lowering the temperature. (2) Appropriate to reduce the baby’s body clothing or open the window ventilation, the baby for gradual cooling. (3) Give the baby some warm water to replenish water appropriately. 2. Oral medication: If the fever to 38.5 degrees, you can consider giving the baby to take children’s antipyretics, children commonly used antipyretics are acetaminophen, ibuprofen and so on. Note that the above medication should be used under the guidance of a doctor, avoid self-medication. If your baby’s fever does not improve after physical cooling and medication, it is recommended that he or she go to the hospital in a timely manner in order to clarify the cause of the illness and standardize the treatment.