The common reasons why the elderly can not sleep are, first, the elderly sleep demand reduced, if the elderly often can not sleep, the next day in good spirits, no sleepiness, you can reduce the sleep time, go to bed later, get up earlier, on time, the formation of a new biological clock, so as to reduce the occurrence of insomnia. Second, sleeplessness is a symptom of certain diseases, such as Alzheimer’s disease, can lead to insomnia sleeplessness, should actively treat the disease, so as to improve sleep. Third, certain psychological factors, such as the elderly living alone, often feel lonely and depressed, will lead to insomnia sleeplessness. In this case, family members should care more about visiting the elderly, more conversation and chat, keep the mood happy, no mental pressure. Older people should usually take more walks, more outdoor sports such as square dancing, more interaction with peers, keep a good mood, you will have a high quality sleep.