1, subject knowledge: this is the basic knowledge that teachers must have, including the basic theory, basic skills and teaching methods of the subject. Subject knowledge is the premise and foundation of teacher education. Only by mastering solid subject knowledge can we teach it to students better.

2. Pedagogical knowledge: Pedagogical knowledge is a skill that teachers must master, including educational psychology, educational measurement and evaluation, curriculum and teaching theory, moral education principles, etc. Pedagogy knowledge can help teachers better understand students' psychological and behavioral characteristics, master the basic laws and methods of education and teaching, and improve the effect and quality of education and teaching.

3. Educational technology knowledge: With the development of information technology, educational technology knowledge has become a skill that teachers must master. It includes the knowledge of multimedia technology, network technology and artificial intelligence technology, which can help teachers make better use of modern information technology and improve teaching effect and quality.

The importance of teachers' professional knowledge;

1. Teaching quality: Professional knowledge is the foundation of teacher education. Only by mastering solid subject knowledge can we better impart it to students and improve teaching quality. Teachers should master the knowledge of the subjects they teach, explain them accurately and clearly, and use teaching methods and means flexibly according to the actual situation of students, so that students can better understand and master knowledge.

2. Role as an example: Teachers' professional knowledge not only helps to improve the quality of teaching, but also plays a role as an example. Teachers' knowledge level and academic accomplishment can improve students' trust and respect for teachers, thus enhancing teachers' prestige and appeal. In education, teachers' knowledge level and academic accomplishment are also the objects of students' worship and imitation, and teachers' words and deeds will also have a far-reaching impact on students.

3. Career development: In terms of career development, teachers' professional knowledge is also very important. With the deepening of educational reform, teachers need to constantly update their knowledge and improve their own quality to adapt to the new educational situation and requirements. Teachers can better meet the needs of professional development and improve their professional competitiveness only by mastering solid subject knowledge and educational theory knowledge.