The trade union in China is a mass organization voluntarily combined by the working class, a representative and defender of workers' legitimate rights and interests, a "big school" for the working class and a "home" that workers can trust. Joining a trade union has the following eight advantages: (1) When your labor rights and interests such as salary, welfare and social insurance are infringed, the trade union will help you solve them. (2) When your legitimate rights and interests are infringed and you resort to law, the trade union will provide legal aid. (3) When you and your family encounter special difficulties, you tell the trade union that the trade union will send you warmth and help. (4) When your child can't go to school because of family poverty, you tell the trade union that the "Golden Autumn Education" activity of the trade union helps the child realize his dream. (5) When you need to find a job, you tell the trade union that the trade union will help you recommend a suitable position. (6) When you are sick and have no money to seek medical treatment, you can get financial support from on-the-job employee hospitalization insurance, critical illness insurance, special illness insurance for female employees and Ankang group accident insurance established by the Municipal Federation of Trade Unions. (7) When you are tired from work or feel lonely in a foreign land, the cultural and sports activities organized by trade unions bring you physical and mental pleasure. (8) When you need to learn culture and skills, the education and on-the-job training activities carried out by trade unions enable you to constantly improve yourself and improve yourself.