The invention discloses a lens frame. The lens frame comprises a frame body and a plurality of pressure plates, wherein the frame body comprises four borders; the four borders are connected end to end; the inner sides of the four borders are equipped with steps; the height of each step is less than the height of each border; the edge of the lens is arranged on the steps; the borders are equipped with threaded holes; through holes are formed in the pressure plates; the plurality of pressure plates are at least arranged on two opposite borders; one end of each pressure plate presses the edge ofthe lens; and the each pressure plate is screwed into the threaded hole through a screw to press onto the border. The lens frame can be used for mounting and fixing a quadrangle lens, and is convenient to mount and dismount.