If a child’s body temperature drops significantly after taking antipyretic drugs, even less than 36 ℃, this situation is due to the following reasons: first of all, it is due to too much antipyretic drug dosage, due to the parents are very anxious to apply antipyretic drugs to the child’s dosage is too large, more than the commonly used dosage range, which leads to the child’s body temperature is too low. In this case, the parents should change the wrong method in time, when applying antipyretic drugs to the child must strictly carry out the determination of the dosage range, in the normal range of medication, do not overdose. Secondly, it is caused by dehydration, because the child will sweat profusely after taking antipyretics, after sweating, parents did not give timely sweat drying, and did not replenish enough water, which led to the emergence of dehydration, the child’s body temperature will drop significantly. The child’s body temperature will drop significantly. And because sweat also takes away too much heat, the child’s body temperature will drop even further. In this case, it is important to dry the child’s fluids, rehydrate him/her, and keep him/her warm.