University teachers are divided into teaching assistants, lecturers, professors and other titles. Then in the university, professors are also graded. First, professors can be divided into full professors and associate professors. Among professors, there are seven grades, of which 1-4 is full professor and 5-7 is associate professor. Therefore, the first-level professor is the highest-level professor and the seventh-level professor is the lowest-level associate professor. Professors' titles can reflect academic titles, professional technical level, status and other information. At the same time, it also symbolizes a certain identity, because those who can be rated as professors are generally prestigious figures in related academic circles. Full professor positions include grades one to four;

Associate professor positions include grades five to seven;

Intermediate posts are divided into three grades, namely, eight to ten grades;

The junior post is divided into three grades, namely 1 1 to 13.

1. The overall control goal of the structural proportion among different levels of senior, middle and junior posts in colleges and universities in China is: the proportion among secondary, tertiary and tertiary posts is1:3: 6;

2. The ratio of five, six and seven posts is 2: 4: 4;

3. The proportion of posts in Grade 8, Grade 9 and Grade 10 is 3: 4: 3;

4. The ratio between11and 12 positions is 5: 5.

The difference between first-class professors, second-class professors and third-class professors;

A first-class professor is the highest level in the title of professor, and those who are rated as first-class professors are generally academic leaders, that is, academicians. According to the regulations, only academicians can meet the relevant evaluation standards, so there are many disciplines related to natural sciences, and there are fewer first-class professors in social sciences and humanities.

The second-level professor is a level slightly lower than the first-level professor in the title of professor. Professors who are rated as second-level professors are generally leaders close to academia, that is, the main leaders of universities and research institutes. According to the regulations, second-level professors can only meet the relevant evaluation criteria if they make significant contributions in related fields, so there are more related disciplines in natural sciences and fewer second-level professors in social sciences and humanities.

Third-level professors are more common in the title of professor. Professors who are rated as third-level professors are generally full professors who have worked for a long time and made breakthroughs in academia, that is, university presidents, discipline leaders, urban backbones, young elites, researchers who have been engaged in scientific research institutes for many years, etc. Because there are not so many evaluation requirements for third-level professors, there are relatively more third-level professors in social sciences and humanities.