Non-listed companies often have a monopoly phenomenon, and the ownership and management rights of the company are highly unified, which leads to the implementation of the three-party system in many cases. With the development of the enterprise, the management right of the company will gradually shift to professional managers. Because the goals pursued by shareholders and managers are inconsistent, there is moral hazard between shareholders and managers, so it is necessary to guide and limit managers' behavior through incentive and restraint mechanisms.