The word "teacher" has two meanings, which refers to both a social role and the undertaker of this role. Teachers in a broad sense refer to those who impart knowledge and experience, while teachers in a narrow sense refer to those who have received special education and training and are engaged in education and teaching in education (schools). A teacher in a narrow sense refers to a professional who has received special education and training, taught students scientific and cultural knowledge and skills, developed students' physique, educated students in ideology and morality, cultivated students' noble aesthetic taste, and trained the educated into talents needed by society.

Refers to a specialized educator who is entrusted by a certain society (or stage) to train people. Therefore, "XX teachers" are derived, such as martial arts teachers and physical education teachers. To distinguish what is taught. From all aspects, teachers not only play the role of imparting knowledge and inheriting civilization, but also are models with profound knowledge, rich experience, noble morality, positive rationality, stability and practicality.