Abstract: The “double reduction” policy aims to further reduce the excessive homework burden and after-school training burden of primary and secondary school students.Meanwhile,the introduction of “double reduction” has brought new opportunities to teacher professional development,helping enrich teachers' professional knowledge,and enhancing their professional ability as well as their professional beliefs.However,the “double reduction” policy has also brought new problems to the professional development of teachers.Teachers' professional ideals and beliefs need to be strengthened,the mechanisms of teacher incentive and management need to be improved,and the laws of teacher professional development need to be explored.As for the aspect of teachers' psychology,we should stimulate teachers' intrinsic motivation and improve the autonomy of their professional development.As to the aspect of school management,the management incentive should be strengthened and the autonomy in their professional development should be given to teachers.When it comes to the aspect of education policy,its guiding role should be optimized and the institutional guarantee should be perfected for teacher professional development.As far as theoretical research is concerned,scientific research should be reinforced and the theoretical guidance of teacher professional development should be promoted.

Key words: the “double reduction”, teacher professional development, primary and secondary schools, education policy