Insomnia is a state of unsatisfactory quality and/or quantity of sleep that lasts for a considerable period of time, with a prevalence of more than 30%. Patients live in daily pain, which has a great impact on work and life and can cause unexpected events, and long-term insomnia can induce depression. Treatment measures: 1. Pre-treatment assessment: examination of coexisting somatic diseases, knowledge of sleep history, polysomnography. 2. Non-pharmacological treatment: supportive psychotherapy, cognitive-behavioral therapy, relaxation therapy, stimulus control therapy, time-control measures, sleep restriction, physical exercise, etc. 3. Treatment of hypnotic and anti-anxiety drugs. 4. The application of new antipsychotic drugs. 5. Chinese herbal medicine treatment. 6. Physiotherapy: transcranial magnetic stimulation treatment, electroacupuncture treatment, etc.