The invention discloses a three-freedom-degree lifting device directly driven by hydraulic pumps and belongs to the field of fluid pressure control mechanisms. The three-freedom-degree lifting device comprises a top board, a bottom board and a flow division valve block fixed to the center of the bottom board. An energy accumulator is arranged on the flow division valve block. Three lifting mechanisms of the same structure surround the energy accumulator. The upper ends of the three lifting mechanisms are connected with the top board and the lower ends of the three lifting mechanisms are connected with the bottom board. The flow division valve block is connected with the hydraulic pumps of three hydraulic drive systems which are of the same structure and independent of one another through pipelines. The hydraulic pump of each hydraulic drive system controls the corresponding lifting mechanism and serves as an independent oil source of the corresponding lifting mechanism. The three-freedom-degree lifting device is suitable for being used as an auxiliary tool for heavy object lifting and carrying, vehicle overhauling and other work and meanwhile the device can be carried for emergency occasions of field vehicle fault maintenance or dragging and the like.