This article believes that in piano performance teaching in colleges and universities, the significance of cultivating students' musical expressiveness is mainly reflected in three aspects: the future development of students, the development of piano art and the reform of education and teaching. In the specific training path, it is necessary to scientifically grasp the relationship between performance technology and music performance, enhance students' awareness of music analysis, and effectively improve students' theoretical accomplishment and create a display platform to exercise students' performance ability.