In the 21st century, the field of education has undergone significant changes. With the continuous development of curriculum reform, teacher training, and educational evaluation systems, improving the overall level of education has become a common goal of society, schools, and parents. In practice, teachers’ educational styles significantly impact junior high school students’ learning engagement and are crucial for enhancing their educational outcomes. This study summarizes the connotation and classification of teaching styles and learning engagement based on existing literature. Research indicates that teaching style has multiple influences on middle school students’ learning engagement. Teachers’ expectations influence the teacher-student relationship, which indirectly promotes students’ emotional engagement at a psychological level. Furthermore, the continuous optimization of teaching styles in dynamic learning environments further enhances middle school students’ learning engagement.