The reason why elderly patients cannot sleep at night, this situation is mainly seen in the following aspects: First, with the increase of age, the elderly have more problems with sleep, because the elderly need for sleep is reduced, so there may be difficulties in falling asleep every night, 5-6 hours of sleep is enough. Secondly, some elderly people may not need to work during the day, so they may take a nap at home during the day, which is one of the main reasons that affects patients with sleep disorders at night. The third aspect, the elderly can not sleep at night, consider the existence of neurological weakness, insomnia, or because of cerebral arteriosclerosis, cerebral blood supply and other causes, for this situation, the elderly can not sleep at night to adjust their lifestyle, but also appropriate application of some sleep improvement drugs.