With the rise of reflective culture in the world, a new round of basic education reform is in full swing, and how to improve the reflective ability of mathematics teachers has been placed in an important issue in the teaching system. Mathematics teachers' reflective teaching behavior has a strong internal motivation for teachers. Teachers' reasonable behavior can give full play to teachers' initiative and creativity in teaching and play a positive role in improving the quality of mathematics teaching in middle schools. This paper studies how to cultivate the reflective ability of mathematics teachers and improve the quality of middle school mathematics teachers, and mainly gives some contents around the necessity of teachers' reflection in teaching. The purpose is to explore