The utility model discloses a maintenance auxiliary tool for an explosion-proof distribution box, which belongs to the technical field of distribution box auxiliary tools and is used for assisting the maintenance of the distribution box, the distribution box comprises a box body and a detachable box cover, the distribution box comprises a sleeve plate, an inner moving plate is movably inserted in the sleeve plate; the first clamping jaw and the second clamping jaw are arranged at the ends of the sleeve plate and the inner moving plate respectively, and a threaded hole is formed in the second clamping jaw; a thread matched with the threaded hole is arranged at one end of the supporting rod; according to the scheme, the box cover is supported by the supporting rods, so that the mode that the box cover needs to be supported by other workers at present is avoided, other labor force is saved, and the situation that the box cover falls off due to errors of the workers, so that a connecting wire is broken or separated is prevented; and meanwhile, a tedious mode of disassembling the box cover by disassembling the wiring on the box cover is not needed, so that a large amount of labor force and time are saved, the working efficiency of maintenance is remarkably improved, the operation progress is accelerated, and the device can be widely popularized and used.