Students' mental health is a necessary condition for success. Appropriate infiltration of mental health education in mathematics teaching will enable students to learn mathematics with a healthy attitude, so that the efficiency of accepting mathematics will certainly be improved. Mental health education in mathematics teaching means that teachers consciously use psychological principles and methods to impart knowledge and skills to students, develop students' intelligence and creativity, maintain and improve students' mental health, and make students have excellent qualities of being proactive, taking care of the overall situation and being helpful.

Second, be a "happy teacher", infect students with happiness and cultivate students' positive mathematics emotion.

With the development of society, people's happiness gradually decreases and their anxiety suddenly increases, especially in teaching. However, whether from the perspective of teachers themselves or from the requirements of education, the growth of students requires teachers to always maintain a happy, cheerful and optimistic emotional attitude. Teachers with unstable emotions are likely to disturb students' emotions, while teachers with stable emotions will also stabilize students. Makarenko once said, "A teacher who can't control his emotions will not be a good teacher." If a person's negative emotions are not controlled in time, it is easy to infect others and form a vicious circle. Happy teachers' implementation of happy teaching can make students feel comfortable and psychologically stable, so that students can actively receive education in happiness.

Third, establish teaching objectives in combination with students' reality.

First of all, teachers should face up to individual differences and have different requirements for students at different levels, so that each student can fully feel the teacher's love, enjoy the joy of success and devote himself to learning with high enthusiasm; Instead of using the standard of excellent students to require all students, otherwise students will be tired of coping and some poor students will lose interest in mathematics. Therefore, teachers should combine the actual situation of students in this class and work hard on the combination of knowledge structure of teaching materials and students' cognitive structure. Review should not only have the same basic requirements, but also make the top students have clear goals and feel that they have something to do, so that all students can really consolidate their knowledge and improve their mathematical ability to varying degrees through systematic review.