High fever after the body temperature of 35.5 degrees may be affected by the role of antipyretic drugs, but also may be caused by excessive sweating, but also may be caused by the environment temperature is too low. 1. antipyretic effect: if the patient itself is too sensitive to the drug, or a one-time dose of excessive antipyretic drugs, may lead to a high fever patient’s body temperature fell rapidly, the situation of low body temperature, thus appearing after a high fever body temperature of 35.5 ℃ performance. 2. Excessive sweating: During the period of high fever, the patient sweats will play the role of heat dissipation, but if the body surface sweat loss is too much, it may lead to hypothermia, and the body temperature after high fever is 35.5 degrees. 3. The environment temperature is too low: because of the high fever, the environment temperature is too low, not do a good job of warm measures, there may be a low body temperature, thus appearing after a high fever body temperature of 35.5 degrees. If the patient has a high fever with a body temperature of 35.5 degrees, it is recommended to consult a doctor in time to identify the cause of the disease and then targeted treatment.