in the early 19th century, light music has been used to promote patients' sleep. Doctors pointed out that listening to suitable light music for insomnia patients can really reduce the use of sleeping pills and sedatives. The rhythm of light music will affect the hormones of human body; Compared with young people, the neoepinephrine in the elderly has increased significantly; This hormone has been confirmed in recent medical research to be related to the occurrence of sleep and the number of waking up at night. The scientific research of light music promoting sleep has been confirmed in Germany, the United States and the Soviet Union, etc. The American Medical Review Committee has already announced that most sleeping pills lose their efficacy after two weeks of use by patients. Based on the above reasons, light music therapy has been paid more and more attention and has been widely used by medical staff.