This is a grass-roots trade union. According to the brief introduction of education trade union, education trade union is an integral part of China trade union and a special industrial trade union. It is the most extensive and representative mass organization of the working class in the education system, which appears in the whole society and is formed by the voluntary combination of teaching staff. It is an important force to develop education in China. The nature of educational trade unions is manifested in two aspects, one is class nature, and the other is mass nature. The class nature shows that the education trade union is not a super-class organization that any member of society can join, and it can only be composed of working class members-the vast number of faculty members working in the education system. The mass performance is that the education trade union is the most extensive mass organization in the education system, and the majority of teaching staff can participate voluntarily. All the activities carried out by the education union are based on the voluntary participation of faculty and staff. The class nature and mass nature of educational trade unions are mutually conditional. Its mass is based on its class nature and is within the scope of the working class; Its class nature is based on the masses and has a broad and profound mass base. The unity of class organization and mass organization of the working class is the most fundamental attribute of educational trade unions.