1, the high pressure of life or work, the pace of life in modern society has accelerated, making more and more patients with insomnia today; 2, some people have irregular life, disrupting the sleep pattern. For example, some children are addicted to games, young people bar or playing mahjong, etc.; 3, taking excitatory drugs or drinks before going to bed; 4, some people suffer from serious diseases, such as anxiety and depression, stroke, tumor, Parkinson’s disease, etc.; 5, night work or jet lag; 6, trauma and emergency or serious changes in the family.