The normal temperature range for a one and a half year old baby is 36°C-37.3°C. The body temperature changes with the surrounding environment and the child’s condition. For example, the child’s body temperature may be a little lower when he/she is sleeping, and a little higher when he/she is eating, crying, or moving, but it will not exceed the normal range. If the child’s body temperature exceeds 37.3℃, it is a fever; when the child’s body temperature exceeds 38.5℃, oral ibuprofen is needed to reduce the fever. Because children are young and have deviated immunity, they are prone to various infectious diseases and recurrent fever, so you should pay attention to take the temperature regularly and observe the change of the child’s temperature.