The invention provides a distributed cooperative control method of a large-scale hydraulic system. The large-scale hydraulic system is provided with a leader hydraulic system and follower hydraulic systems, the leader hydraulic system is connected with a server, and moves according to instruction signals from the server, the follower hydraulic systems track motion of the leader hydraulic system, and the states of the follower hydraulic systems are kept consistent with the leader hydraulic system. According to the distributed cooperative control method, a wireless interaction communication method is used, each hydraulic system is provided with a controller, the controller can only work by utilizing information of other neighbor hydraulic systems, each controller can make autonomous decision, and the cooperative control method enabling interaction of local information among the hydraulic systems is realized. It is not required to connect all the hydraulic systems to the server, and the defects that wired transmission is low in efficiency and hard to connect lines during large-area synchronous control are overcome.