Giving full play to the subjective initiative of students is the basic requirement of classroom teaching and the objective requirement of quality education. Under the guiding ideological requirements of the new curriculum standard, mathematics teaching needs to give full play to the subjective initiative of students in order to stimulate students' enthusiasm for learning, so that students can master more knowledge in the process of autonomous learning and improve their learning efficiency. Below I combine my many years of teaching practice to discuss how to give play to students' subjective initiative in mathematics teaching.