The child’s fever went down and then high fever, the specific reasons are as follows: 1, the child’s fever if completely down, there is no longer any clinical symptoms, if and then repeated fever, is considered to be the recurrence of the disease or accompanied by other new diseases. This situation needs to take the child to the hospital for further detailed examination, to clarify the cause of recurrent fever further treatment. 2, if the child fever, oral antipyretic drugs back to normal, followed by recurrent fever, just because the disease is in the acute stage is not completely cured, according to the original cause of the disease continue to be treated, and at the same time, according to the child’s temperature to give antipyretic treatment. In the case of high fever, when the body temperature is greater than 39 ℃ or above, or body temperature is greater than or equal to 38.5 ℃ can be oral antipyretic drugs, such as acetaminophen or ibuprofen. At the same time to give the child to drink more water, is conducive to the recovery of the disease, low fever state can be given to the child for physical cooling.