The invention relates to a slide wire current collector support device. The slide wire current collector support device comprises an inner pipe and an outer pipe sleeving the inner pipe. The lower endof the inner pipe and the lower end of the outer pipe are rotationally connected through a bearing. Corresponding positioning holes are formed in the upper portion of the inner pipe and the upper portion of the outer pipe, and a positioning pin penetrates through the positioning holes to connect and fix the inner pipe and the outer pipe. A connecting plate is fixed to the outer wall of the outerpipe through a bolt, and supports are welded to the connecting plate. The two supports are arranged, the problem that due to the fact that one support bears two current collectors, the bearing force is high, and replacement is inconvenient can be avoided, and the power supply work efficiency is improved. By means of a bearing structure, the outer pipe drives the supports to rotate to the positionfacilitating operation of a maintainer, the work of inspecting, overhauling, replacing and the like on a slide wire current collector can be completed by the maintainer fast and conveniently, and therefore the labor intensity of the maintainer is reduced, the overhauling work time is shortened, and the potential safety hazard coefficient of the work is reduced.