Insomnia is a sleep disorder disease, known as insomnia in Western medicine and sleeplessness in Chinese medicine. Patients mainly show difficulties in falling asleep, shortening sleep time or waking up more often during sleep, not easy to go back to sleep after waking up, resulting in patients appearing unsatisfied with the quality of sleep, poor sleep at night, daytime sleepiness, irritability, poor concentration, memory loss or loss of emotional control, etc. Sleep disorders have seriously affected a person’s physical health. Sleep disorders can be divided into primary sleep disorders and secondary sleep disorders. Primary sleep disorders are not found to have a clear cause, and are mostly due to emotions or living environment. Secondary insomnia is mostly due to physical discomfort, such as body pain, cough and angina at night, excessive night urination, etc. Medications can be given for the type of insomnia the patient has.