As long as the baby’s body temperature is greater than or equal to 37.4 ℃, belonging to the fever state, fever reducer can be used. In the low fever 37.4-38.1 ℃ this period, may only use antipyretic patch at the same time with more water, the child’s temperature can be returned to normal. Fever reducer is to play a physical cooling effect, not to play a fever reducer oral role. If the high fever state when the body temperature is greater than or equal to 38.5 ℃ above, moderate heat or high fever above, this case the child alone with antipyretic patch generally can not be reduced to normal, back to 37.4 ℃ below, the need for oral antipyretic drugs together. Especially high fever above 39.1 ℃, this temperature may still be accompanied by cold hands and feet, poor peripheral circulation, may be prone to convulsions and so on, then you can paste the fever-reducing stickers to the neck, forehead, can avoid the occurrence of convulsions, but also has a certain auxiliary effect.