Teachers' professional development refers to teachers' continuous learning and practice, active exploration, reflection and innovation in order to improve their teaching ability and professional quality and realize the sustainable development of their personal career. Teachers' professional development is the only way for teachers' career, and it is also an important guarantee for the continuous improvement of education and teaching quality. The main contents of teachers' professional development include the following aspects:

Learning of subject knowledge and educational theory: Teachers should constantly learn new subject knowledge and educational theory, and know the latest teaching methods and technologies, so as to maintain their own subject accomplishment and teaching level.

Improvement of practical experience and teaching skills: Teachers should constantly sum up experience in practice, explore teaching methods and skills, and improve teaching quality and educational effect.

Development of discipline research and education research: Teachers should actively participate in discipline and education research, and constantly deepen their understanding and exploration of teaching contents, teaching methods and educational concepts.

Cultivation of professional ethics and educational ideas: Teachers should pay attention to the cultivation of professional ethics and educational ideas, adhere to the student-centered educational thought, and pay attention to personalized education and educational fairness.

Interdisciplinary and interdisciplinary learning and communication: Teachers should actively participate in interdisciplinary and interdisciplinary learning and communication, broaden their horizons, broaden their thinking, and improve their professional quality and comprehensive ability. ?