Teachers' knowledge is an important part of teachers' professional quality.

Teachers' professional knowledge includes:

1. Ontology knowledge refers to the specific subject knowledge that teachers need to possess.

2. Conditional knowledge, teachers should have psychological knowledge such as pedagogy and psychology.

3. Practical knowledge mainly refers to the knowledge and ability that teachers should have in classroom situational teaching and the relevant code of conduct.

4. Operational knowledge refers to teachers' accumulation of teaching experience and knowledge.