A hot body causes include physiological factors, as well as pathological factors, such as heat stroke, infection, neurasthenia, perimenopausal syndrome. 1. Physiological factors: when the patient is emotionally excited sympathetic nerve excitation, then conscious body a heat emotionally stable after normal. When the environmental temperature suddenly increased, will also be conscious of a burst of heat. 2. Pathological factors (1) heatstroke: if long time in the high heat environment, may lead to body dysfunction and heatstroke, can have a heat, pale, heart rate increase. (2) Infection: bacterial or viral infection may lead to the body temperature regulating point upward and fever, conscious body heat symptoms. (3) Neurasthenia: This disease is caused by excessive psychological stress. At the onset of autonomic dysfunction, the patient is conscious of a burst of heat, accompanied by irritability, insomnia and other symptoms. (4) perimenopausal syndrome: women in the perimenopausal period due to the decline of estrogen in the body, resulting in autonomic nervous system dysfunction, which can be manifested as a heat on the body and other symptoms. The fever may be transient and does not require special treatment; if it is accompanied by other symptoms, the patient should go to the hospital in time, complete the relevant examinations, make a clear diagnosis, and then receive targeted treatment.