Trazodone hydrochloride belongs to the anxiolytic and antidepressant drugs, mainly used to treat patients with various types of anxiety and depression, with the following advantages: 1, sedative and hypnotic effects, can inhibit the central nervous excitation effect and slight muscarinic effect, alleviate various types of insomnia and reduce the number of awakenings in sleep, improve the quality of deep sleep; 2, no benzodiazepine sleeping drugs the next day sleepiness, hangover; 3, no drug Dependence and addiction, and the dose can be adjusted at any time; 4. It does not affect sexual function; 5. Trazodone has less effect on the heart, and is more suitable for elderly patients with anxiety and depression with heart disease; 6. It does not affect respiratory function, and is suitable for patients with sleep apnea syndrome; 7. It has low incidence of side effects, high safety, and good patient compliance.