The role of the company, in theory: (1) The company is a new enterprise organization model that adapts to the development of socialist market economy with its unique functions. (2) Standardized companies can effectively separate the ownership of investors from the property rights of corporate entities, which is conducive to separating government from enterprises, transforming the operating mechanism and improving the operational efficiency of enterprises and capital. (3) Establishing a modern enterprise system is the direction of state-owned enterprise reform. In accordance with the requirements of "clear property rights, clear responsibilities, separation of government and enterprise, and scientific management", we will implement standardized corporate system reform for large and medium-sized state-owned enterprises, so that enterprises can become legal entities and competitive subjects that adapt to the market. In practice, companies can speed up fund raising, improve enterprise management and enhance enterprise vitality.