Shanghai is the birthplace of China’s working class and modern labor relation. Since reform and opening policy in China has been implemented，with which the base of Labor Union becomes bigger，the function of Labor Union is also deepened and adapted to this situation. The focus of Labor Union is to protect the basic rights of the labor；the content of services provided by Labor Union is to meet the various demands of the labor；the target of Labor Union is to maintain the hormonal relation between the labor and the capitalist. What’s more，Labor Union in Shanghai has some particular features，such as extensive service and public operation. For further development，the union should protect the legal rights of the labor and participate in social administration and social service. The union also needs to innovate in right protection system，the grassroots system，and organizational system.