The new curriculum reform calls for teachers and students to be double subjects.Due to the differences between teachers and students,there is an asymmetry between teachers and students in teaching and learning,which is manifested in the three dimensions of material,energy and information.In the teaching system,the asymmetry of teachers and students will inevitably produce games,so this paper establishes a"teacher-student-school"three-dimensional game model.It reveals the multi-party dynamic game process in the teaching process,provides insight into the symmetry of teaching from the perspective of teaching asymmetry theory,analyses the asymmetry of teaching,thus realizing the teaching strategy of"asymmetry-symmetry"which transforms both of them into each other,and provides a new way of thinking for the realization of effective teaching.