The test bench scheme of simulating the winch heave compensation system based on the direct drive volume control hydraulic system was proposed. The model of the system was built by using AMEsim software. The structure and parameters of the system were determined. The controller including servo motor speed control and variable pump displacement joint controller was designed. The energy calculator was designed. By having a simulation analysis on its compensation characteristic, the energy of the whole system was calculated. Results show that the system has a good compensation characteristic. The proposed experiment scheme is feasible. The design of the controller can well achieve direct drive combined control. The calculation of energy shows that compound control has obvious energy saving effect comparing with relatively single servo speed control or single variable displacement control. The result will provide theoretic basis for the construction of the test bench.