The invention belongs to the technical field of optical property testing tools for structural parts and discloses a polarizer supporting part for lighting check equipment and the lighting check equipment. The polarizer supporting part for the lighting check equipment is provided with multiple connecting structures on a side of a supporting plate, and a connecting structure is formed in at least each corner area on the supporting plate; and moreover, a fixing piece which is detachably connected with the connecting structure is fixedly arranged at a position, which corresponds to each connecting structure, of a frame of the lighting check equipment, the acting force of the supporting plate between the connecting structure and the fixing piece is balanced in stress, a horizontal state is kept, the supporting stability of the supporting plate is guaranteed, the problem that one end of the supporting plate hangs down so as to damage the panel or other parts is solved, and the polarizer supporting part is simple in structure and convenient to mount and detach. The polarizer supporting part serves as the lighting check equipment of an upper polarizer supporting part, an upper polarizer supporting plate is stably supported, and the panel checking effect is good.