For the past few years, music therapy in Taiwan was more and more respected. Various kinds of medical field were used music therapy to research. Taiwan faces the problem with aging of population now. Due to follow hard at heel some related problem, we need to properly take care of old people. In addition to use medicine, music therapy perform on taking care of the old people will be worthy of another way to confer. This article arranged effects of music therapy about various fields by documents review, and most of them are positive effects, including the health of physiology and psychology, and improving the quality of life. Compare with other fields, music therapy researches in aging people which occupied 19% less than other kinds of researches. Therefore, we can research to go deep into music therapy in aging people in the future.