For the position synchronization control system of four hydraulic motors with unknown system dynamics, external time-varying disturbances and force disputes, an integral robust collaborative control strategy based on adjacent cross-coupling control was proposed. The controlled platform is divided into four position servo systems independently controlled by hydraulic motors, and an integral robust control strategy is designed to deal with the matching and mismatch model uncertainties of the system, then achieve the high precision trajectory tracking performance of the single hydraulic motor driven system. At the same time, PI coupling controller is used to compensate the position error or force error between two adjacent hydraulic motors to realize the purpose of cooperative control of four hydraulic motors. The stability of the single hydraulic motor servo system is proved based on Lyapunov stability theory. Finally, the effectiveness of the proposed control strategy is verified by co-simulation.