There are many causes of sleeplessness, the common causes are mainly the following: 1, physiological factors, such as high-intensity exercise and work before bedtime or the consumption of strong tea, coffee and other foods that easily excite the brain nerves before bedtime, can affect sleep, resulting in sleeplessness, but this generally does not require too much treatment, remove the cause, through adequate rest can be effectively improved. 2, disease factors, such as plant nerve Disorders, mostly seen in menopausal women, is due to disorders of hormone metabolism in the body, clinical manifestations are diverse, often accompanied by the problem of sleep disorders. Hyperthyroid hormone function is mostly seen in young people, due to excessive secretion of thyroid hormones in the body, resulting in an increase in the basal metabolic rate, which can also cause sleep disorders, which need to be treated according to the clinical performance of the specific cause. 3, the drug factor, some drugs have the role of excitation of the central nervous system, such as asthma drugs aminophylline, ephedrine and other hormonal drugs, can affect sleep, resulting in Sleeplessness can be effectively relieved after discontinuation of the drug.