Precursors of heatstroke, at this time, as long as timely out of the heatstroke environment, the discomfort will be quickly relieved and will not continue to develop into heatstroke. 1. body temperature: due to the high temperature environment, there may be a mild increase in body temperature, but it may also be normal. Therefore, body temperature alone is not enough to determine whether you are going to have heat stroke. If there is a slight increase in body temperature, it is important to be alert. 2. Neurological performance: The most prominent manifestation of aura heat stroke is headache, dizziness, and inability to concentrate. This is because the high temperature affects the function of the central nervous system and the endogenous heat production increases, which also interferes with the cardiovascular function. 3, limb performance: In the aura of heat stroke, the limbs will be weak and sore, uncoordinated movements, etc.. On the one hand, this is due to a mild disorder of the nervous system, and on the other hand, the cardiovascular function is affected, and the blood circulation and energy supply are impaired. 4. sweating and thirst: In aura heat stroke, the thermoregulatory center is affected due to high external temperature and increased endogenous heat production. In order to dissipate heat, the body will have a lot of sweating performance, at the same time, due to increased water loss, there will be dry mouth and thirst, want to drink water performance.