Fever dry mouth may be related to their own body factors, may also be caused by drug factors. 1. own body factors, fever body temperature is too high, the body heat production is larger, the metabolic rate is accelerated, consume most of the water, may appear dry mouth symptoms. 2. drug factors, fever after taking medication body temperature drops lead to more body sweating, the body water loss, fever dry mouth. Patients in the fever period can increase the amount of water, can replenish the body’s loss of water, but also increase the amount of urination, is conducive to the body’s toxin discharge. After the fever, it is best not to eat spicy and stimulating food, and do not be in a higher temperature environment, so as not to affect the dissipation of heat.