Insomnia is also a very common phenomenon belonging to the elderly, insomnia is mainly due to several major causes: 1, physiological causes; 2, physical diseases; 3, drug-induced; 4, mental illnesses caused by, such as anxiety, depression, etc.; 5, environmental health problems caused by the change of the environment. There is actually no total amount of sleep, everyone is different, as long as the next day can work as usual, is normal. It is time to go to bed, do not do other actions in bed, that is, there is no formation of conditioned reflexes, it is not easy to go to sleep. Every day can be fixed time to get up, regardless of yesterday’s sleep, can be fixed time, can nap during the day, but do not sleep too much, before 3 o’clock in the afternoon to sleep 20-30 minutes is enough, usually can increase the exposure to sunlight, you can increase the movement, are helpful to sleep.