In piano learning, sparring after learning is very important to make the learning results more significant. Sparring is an essential part of learning the piano. Piano learning has always played an important role in the field of music education, which can not only cultivate students’ musical literacy, but also improve hand-eye coordination and improve concentration. However, traditional piano instruction often relies on face-to-face private tuition, which is limited in time and space. The emergence of the piano sparring app breaks this limitation and provides learners with a more flexible and personalized learning method. These apps help beginners and advanced learners consolidate their skills and improve their playing skills with real-time feedback, adaptive practice plans, and a diverse library. In addition, they record the practice process and help the teacher assess the student's progress, resulting in more accurate instruction.MATLAB simulation shows that under the condition of certain evaluation criteria, the piano accompaniment sparring APP is a piano accompaniment sparring for piano learning The reliability and quality of piano accompaniment sparring are better than the traditional sparring mode.