In this day and age, music is being studied by more and more people as a way of spreading and carrying the arts, and the piano, in particular, has become the primary choice of extracurricular learning for most students. This paper analyzes the current situation of piano education as well as its characteristics, so as to draw the limitations of piano teaching. Secondly, it analyzes the diversified music to obtain the development process of diversified music. Finally, piano teaching strategies are improved based on cross-cultural perspectives so that students can learn about music from different cultures and regions. The analysis of the improved piano teaching strategy concludes that the improved approach enhances the students' academic performance, increasing the original average score from around 75 to 88, with a percentage increase of around 17.3%, and that the students have a high level of satisfaction with the teaching approach, in which 800 students are satisfied with the style of the teaching repertoire, whereas 750 students believe that the teaching strategy's techniques and theories are in line with the course progress, which It can reach about 7 points, which is relevant and can meet the students' needs.