The utility model relates to a simple charging mutual inductor mounting support assembly that is used for installing a mutual inductor at a mounting beam of a distribution cabinet. The simple charging mutual inductor mounting support assembly comprises two fringe frames, a mounting rack, and connecting screws. The two fringe frames includes horizontal plates and vertical plates, wherein the horizontal plates and the vertical plates are perpendicular to each other; first circular holes are formed in the horizontal plates; and first slot holes in a horizontal mode are formed in the vertical plates. The mounting rack includes an intermediate plate and two side plates perpendicular to the intermediate plate; and second slot holes in a horizontal mode are formed in the intermediate plate and second circular holes are formed in the side plates. The connecting screws have butterfly nuts; the fringe frames are connected with the mounting beam by the connecting screws passing through the first circular holes; the mounting rack is connected with the fringe frames by the connecting screws passing through the first slot holes and the second circular holes; and the mutual inductor is connected with the mounting rack by the connecting screws passing through the second slot holes. The provided simple charging mutual inductor mounting support assembly has the advantages that the mutual inductor can be installed in the distribution cabinet easily and conveniently.