Music therapy can help social workers deal with negative behaviors and symptoms of dementia in older adults without drugs or physical restraints, thereby improving the quality of care. This study tested the effectiveness of music therapy activities for improving agitated behavior in older adults with dementia living in long-term care institutions. The study was quasi-experimental. Eighty older adults were recruited from two nursing homes. A purposive sampling strategy was used to select subjects aged 65 years and above with dementia and agitated behavioral tendencies residing in nursing homes. The music therapy program comprised 90 minute sessions 3 times a week for two months. The program evaluation focused on one criterion: the agitated behavior of participants at the beginning and end of the music theory program, which was measured using a structured scale. Ultimately, the music therapy program showed promise for improving agitated behavior in older adults with dementia living in nursing homes. Incorporating music therapy activities into social work may help make long-term care more diverse and innovative.