According to statistics from the American Music Therapy Association on the work fields of more than 4,000 nationally registered music therapists in the United States in 1999, combined with the adaptation of music therapy in "Introduction to Music Therapy" written by Schmidt Peters in 2002 Overview of the population, music therapy is now mainly used in AIDS, abuse and sexual abuse relief, prisons, brain injuries, hearing impairment, language disorders, learning disabilities, intellectual disabilities, childbirth, premature babies, surgery, mental illness, neurological injury, Spinal injury, Alzheimer's disease, stroke sequelae, children's psychotherapy, hospice care, juvenile delinquency, drug/alcohol treatment, asthma, stage performance stress, family therapy, psychotherapy for normal people, visual impairment, appearance injury, communication disorder or injury, self- People with severe multiple disabilities such as autism, emotional disorders (children, adolescents, adults), including those receiving treatment in hospitals, those receiving physical rehabilitation programs, the elderly, and the general population who want to achieve physical and mental health, etc.