With the deepening of curriculum reform in basic education, Mathematics Curriculum Standard for Compulsory Education requires students to learn valuable knowledge and practical knowledge in order to improve the effectiveness of classroom teaching. Due to historical and geographical reasons, the effectiveness of mathematics classroom teaching in primary schools in ethnic minority areas is restricted to some extent. How to improve the effectiveness of primary school mathematics classroom teaching in minority areas has become a common topic and exploration direction for many primary school mathematics teachers. The following is the author's superficial understanding of the effectiveness of mathematics classroom teaching in this region for many years. 1. Stimulating students' interest in learning and making students interested in learning effectively is the best teacher to learn. It plays a directional and dynamic role in learning activities and is an important factor to stimulate students' enthusiasm for learning and enhance their thirst for knowledge. In teaching, it is very important to select the growth point of new knowledge, provide incentives and promote the transfer of knowledge, which is not wide enough for students in minority areas, and some students feel that mathematics is boring and their learning enthusiasm is not high. Second, it is an important condition to improve the effectiveness of classroom teaching to create effective life situations in connection with real life. When creating life teaching situations, we should first select life situations related to students.