Teachers' continuing education refers to the education of updating, supplementing and improving the knowledge of in-service teachers with teacher qualifications. It continues to exist during teachers' teaching, even after their retirement, or even for life.
In many countries, the purpose of holding this kind of education is not only to supplement academic qualifications, increase new knowledge or improve teaching, but also to change the teaching conditions such as teachers' knowledge, ability, attitude and behavior, so as to improve the overall adaptability of education to social development and new scientific and technological revolution.