Trazodone hydrochloride belongs to the class of 5-hydroxytryptamine receptor antagonists, as well as anti-anxiety and antidepressants of the 5, serotonin reuptake inhibitor class, mainly used to treat patients with various types of anxiety disorders and depression, with the following advantages: 1, sedative and hypnotic effects, which can inhibit the central nervous excitatory effect and slight muscarinic effects, relieve various types of insomnia and reduce the number of awakenings during sleep, and improve the quality of deep sleep. 2, no benzodiazepine sleeping drugs the next day sleepiness, hangover feeling. 3, no drug dependence, addictive, can adjust the dose at any time. 4, does not affect the sexual function. 5, trazodone has less impact on the heart, more suitable for older patients with anxiety, depression and accompanied by heart disease. 6, does not affect the respiratory function, suitable for patients with sleep apnea syndrome. 7, low incidence of side effects, high safety, patient Good compliance.