The head teacher is a teacher who is fully responsible for the all-round development of all students in a class. The head teacher is not only a leader and organizer with little power and great responsibility, but also a friend, guide and spiritual care of students. First, the head teacher is the designer and manager of the class collective. Second, the head teacher is the backbone to realize the educational purpose and promote the all-round development of students. Third, the head teacher is a bridge to connect schools, families and social education forces ~ ※ The role of the modern head teacher should be changed as follows: 1, the role of the head teacher should be changed from a single type to a diversified one (not only a subject expert, but also an activity organizer, a class manager, a model citizen, a parent's agent, a student's friend and confidant, a student's interpersonal mentor, a student's psychological counselor, etc. ) 2. The role of the class teacher has changed from authoritative to conversational. 3. The role of the class teacher has changed from restriction to guidance. 4. The role of the head teacher has changed from experience to scientific research. 5. The role of the class teacher has changed from passive adaptation to active creation. 6. The role of the head teacher has changed from closed to open.