The body sweats a lot, may be physiological changes, may also be due to disease. Some people’s sweat glands are more developed, there can be a physiological increase in sweating, pay attention to the appropriate amount of water or eat fruit, replenish the lost water can be. Pathological hyperhidrosis is commonly caused by cardiac insufficiency, hyperthyroidism, calcium deficiency and tuberculosis, etc. When cardiac insufficiency occurs, because the heart’s pumping function decreases, it is easy to activate the sympathetic nerves through feedback, inducing excessive sweating. Hyperthyroidism, increased secretion of thyroxine, can affect the body’s energy metabolism as well as water metabolism, which can induce excessive sweating, fear of heat and other symptoms. Calcium deficiency increases sympathetic excitability, which can stimulate sweat glands to increase sweating. In tuberculosis, the toxins produced by tubercle bacilli can easily affect the sweat glands and cause excessive sweating, although tuberculosis is mostly manifested as excessive sweating during sleep at night.