Sleep is an extremely important physiological process to maintain the physiological function of the body, essential to the human body, and the good or bad sleep directly affects the health and longevity of people. According to the calculation of 7-8 hours of sleep per day, each person spends 1/3 of his life in sleep. During sleep, the function of each organ is repaired. According to the theory of Chinese medicine, each internal organ is repaired at different times of the night, and brain cell brain function can be restored to normal in a good sleep, which makes people full of energy and vigor, and increases learning and working efficiency. Modern science shows that sleep will have a good effect on memory, can further strengthen the memory during the day, some can also be organized information, and even give new enlightenment to major scientific research, it can be said that sleep is closely related to human health. Long-term insomnia can lead to brain dysfunction, causing a variety of physical hazards and seriously affecting physical and mental health. Insomnia is usually a subjective experience in which the patient is dissatisfied with the duration and/or quality of sleep and affects social functioning during the day. Insomnia is characterized by difficulty in falling asleep (sleep duration longer than 30 min), sleep maintenance disorders (≥2 awakenings throughout the night), early awakenings, decreased sleep quality and reduced total sleep duration (usually less than 6 hours), along with daytime dysfunction. Daytime dysfunction includes daytime fatigue, sleepiness, napping, poor energy, unresponsiveness, ataxia, decreased judgment, confusion, and mental disturbances.