The purpose of the research is to design proper music appreciation curriculum in Life Curriculum in the elementary school. The research also aims to understand students' feeling and acceptance of the music appreciation curriculum. Through the curriculum, the research intends to promote teachers' professional development. The research employed curriculum action research. Research subjects are 26 second graders (14 male students and 12 female students) in the researcher's class. The collected data includes the questionnaire on students' interests toward learning music appreciation, notes of classroom observation, records of important events, records of focus group interviews, learning portfolios of students, feedback forms of teaching, and reflective journals. The research findings are: 1. The design of the music appreciation curriculum was suitable for lower graders. It 15 feasible to apply drawing, story-telling, body movement, and instrumental ensembles as multi-arts-learning-assistance to teach music appreciation. 2. Students had high acceptance of the music appreciation curriculum. In the emotional aspect, students' music feeling was promoted. In the cognitive aspect, students made progress in understanding music elements and music connotation. However, due to the short duration of teaching, students showed relatively weak performance of stability and control of rhythm and pitch, and distinction of tonalities. 3. Through the action process of designing, practicing, reflecting, and revising the music appreciation curriculum, the researcher promoted her professional development. Finally, on the basis of what the research had learned during the research process and research findings, the researcher made suggestions on music appreciation curriculum design, music teachers' professional competence, and future related studies. The research intends to provide useful suggestions for teachers and personnel who are engaged in the work related to music teaching.