The synchronous lifting technology of double barges was taken as the object of study. The importance of this technology in the salvage industry was analyzed, and its some shortages were put forward. In order to improve the efficiency and adaptability of synchronous lifting, an active compensation strategy was proposed. In order to study the feasibility of the strategy, a hydraulic heave compensation test platform was built to simulate the synchronous lifting of the wreck. Aiming at the design of the six degree of freedom (6D) heave compensation test platform, the mechanical analysis was carried out, and the relationship between the loading force of the ship load and the driving force of the six hydraulic cylinders of the platform with 6D was obtained. It could provide theoretical basis for the selection of load and the design of rated load of hydraulic cylinder. The feasibility of the control model and the feasibility of the active compensation strategy are verified by the co-simulation of ADAMS and MATLAB. It provides data support and theoretical basis for the further study of the heave compensation control strategy during the double barge synchronous lifting.