The classroom is the main battlefield of teachers’ work in higher vocational colleges and universities, and good quality of classroom teaching is not only the transfer of classroom knowledge, but also an effective means of implementing the fundamental task of establishing moral character. In view of this, the article first explores the influencing factors of the teaching quality of teachers specializing in marketing in higher vocational colleges. On this basis, it constructs a predictive model of teachers’ teaching quality based on the decision tree model, utilizes hypothesis testing and feature importance for feature selection, and proposes the SHAP additivity interpretation method to interpret the decision tree model by categories. The study shows that the constructed prediction model can achieve better prediction performance, while using the SHAP interpretation method, three kinds of teaching quality driving factors analysis are realized, and it is concluded that the subjectivity factor’s has the greatest contribution in the improvement of teachers’ teaching quality, and its SHAP value is 0.68. The relevant parts of the school can improve the teaching level of teachers of marketing majors in higher vocational colleges and universities from the aspects of improving the teaching level of teachers, stimulating the interest of students in learning and improving the teaching guarantee system.
