In today's "rejuvenating the country through science and education", teaching (old) teachers as educators are paid more and more attention by the society. The title of a teacher, first seen in the bronze inscriptions of the Western Zhou Dynasty, is called a "judge", or "teacher" for short, an official who teaches the country. It was originally the organizational unit of the Shang and Western Zhou armies.

The rulers of the Western Zhou Dynasty set up "Chinese studies" to cultivate aristocratic children who were good at fighting, and were taught by senior officers "judges". Because "teacher" is to impart knowledge, and "teaching" is an important means to impart knowledge, the word "teacher" has become the laudatory name of "preaching and teaching to solve doubts".

What is a teacher? Notes in Shuo Wen Jie Zi: "Teachers teach people how to speak." Teachers generally refer to people who are directly engaged in educational work or impart knowledge and technology, and also refer to people who are worth learning in other aspects. According to historical records, there were titles such as master, teacher and gentleman in the pre-Qin period, which have been used ever since.

As for "teacher", it used to be the title of the highest scholar of that generation, such as Biography of Mencius and Xun Qing in Historical Records: "When Qi Xiang was king, Xun Qing was the best teacher …" Later, people used to call "old" and "teacher", and gradually they no longer cared about their age, but called teachers teachers teachers.

In the Ming and Qing Dynasties, examiners were called teachers; Running a school in the late Qing dynasty called teaching by teachers; After the Revolution of 1911, teachers, like other officials, were appointed and dismissed according to law, so they were also called teachers.