There is no fastest way to reduce fever in children. Physical therapy is available when there is no high fever, and medication is available when there is a high fever. 1. Physical therapy: when a child’s body temperature does not exceed 38.5 degrees, indicating that it is not in a state of hyperthermia, mainly through physical methods to lower the temperature, such as warm water wipe feet, palms and other parts of the body, adjust the temperature of the room, and keep the room well ventilated. 2. medication: when the child’s body temperature exceeds 38.5 degrees, the child should be given fever-reducing medication in a timely manner, such as ibuprofen suspension, acetaminophen, which can lower the body temperature. Parents must follow the doctor’s instructions, safe and reasonable to the child’s medication, the child’s body temperature repeatedly increased, should also take the child to the doctor for appropriate examination and treatment, do not delay.