The “Marginal People” in classroom teaching refer to those who are ignored or even excluded by teachers and other students because of their own reasons (physical and psychological differences) in classroom teaching activities. The “Marginal People” in classroom teaching are widespread, and their distribution areas are mainly concentrated in the edge of the classroom space, that is, the left and right sides and the back row, and it is more common in the classroom of teachers who do not pay attention to classroom interaction, boring lectures and straight intonation. The reasons for the emergence of marginal students are complex, among which teachers, as educators of the younger generation, need to bear a large part of the responsibility, such as: teacher literacy, teaching design, classroom management and other aspects of the impact on students. In the face of these problems, teachers should make corresponding adjustments and improvements.