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In recent years, psychological therapy and physical therapy, as non-drug treatment methods, are increasingly used in insomnia disorders. Because of their few side effects, satisfactory treatment effect and high patient compliance, they play an increasingly important role in the treatment of in-somnia disorders. The authors of this book are mainly doctors or psychological workers at the clinical front line. They have accumulated some experience in clinical psychotherapy and physical therapy and share it with you. It can be used as a popular sleep book or a reference book for professionals. Most of the authors wrote the book after working in the sleep center, and mistakes are inevitable, but the flaws do not hide the flaws. We still hope that the publication of this book can provide reference for the development of sleep science and clinical psychotherapy and physiotherapy auxiliary reference. This book is supported by Ningbo brand discipline—children and adolescents’ psychological disorders and sleep disorders funds. Here, I would like to extend my heartfelt thanks to all those who care and support the publication of this book.

In recent years, with the continuous improvement of our country's social and economic level, the diagnosis and treatment technology of insomnia disorder has made certain progress. However, compared with developed countries, the main problems in the clinical diagnosis and treatment of insomnia disorder in our country include lack of epidemiological data, limited nonpharmacological intervention methods, absence of standardized diagnosis and treatment system, and shortage of professional personnel.

Depression is a kind of affective disorder with a series of symptoms, such as significant and persistent depression, loss of pleasure, lack of motivation and so on (1). It has the characteristics of high prevalence rate, high suicide rate, high recurrence rate and high disability rate. Data show that as of February 2017, the global prevalence rate of depression has reached 4.4%, the lifetime prevalence rate is 16%, and the number of patients is as high as 322 million. The World Health Organization points out that depression will become the second leading cause of death and disability by 2020 (2), so the treatment of depression has become a hot and difficult issue in psychiatric clinic.