The invention relates to the field of light discs, and discloses a single catching sequence collection type disc catching device. The single catching sequence collection type disc catching device comprises a disc catching main body, an inner bore expanding device, a guide rod transmission device and at least two threaded guide rods, wherein both the inner bore expanding device and the threaded guide rods are arranged on the disc catching main body and extend downwards; the inner bore expanding device is used for expanding the inner walls of center bores of light discs; the guide rod transmission device is used for driving the threaded guide rods to synchronously in a same direction; and threaded grooves on the surfaces of the threaded guide rods are used for containing the outer edges of the light discs so as to drive the threaded guide rods to rotate toward the threaded groove ascending/descending manner, and then the light discs ascend/descend along the threaded grooves. The invention further discloses a corresponding disc catching system ad a light disc loading and unloading method. According to the single catching sequence collection type disc catching device, disc catching force is applied on the side walls and the edges of the center bores of the light discs, respectively, so that the loading and unloading operation of a plurality of light discs is realized skillfully, and the positioning accuracy requirement during the disc catching is reduced.