The incidence of insomnia in the elderly is high, about three times that of young people, and sedative-hypnotic drugs are often needed clinically. Due to the susceptibility of the elderly to central depressants, there is often no ideal hypnotic drug. Benzodiazepines (BZD) are one of the commonly used drugs, but there are also more adverse reactions, such as drug dependence and next morning sleepiness, sudden discontinuation of drugs and withdrawal symptoms such as increased anxiety and insomnia. Diazepam should be avoided as much as possible. 2, because benzodiazepines have muscle relaxation, can cause the elderly to walk weakly and fall, prone to fractures, should be applied with caution, should start with a small dose, under the supervision of the use, especially at the beginning of the use of special care. 3.For elderly patients with memory loss, it is better to apply non-benzodiazepines to avoid further aggravation of memory impairment. 4.Single medication, not a combination of multiple sleep improvement drugs, in order to facilitate the observation of adverse reactions. 5, any one benzodiazepine should not be taken for too long, generally 3-4 weeks to replace another, otherwise it is easy to develop drug resistance. 6, short half-life benzodiazepines, such as triazolam, midazolam, etc., easier to form drug dependence, can be taken alternately with non-benzodiazepines such as zolpidem, zopiclone, etc. 7, once the dependence, should not suddenly stop the drug, so as not to aggravate insomnia, and even delirium and other reactions.