The scissor-type conveying device moves vertically in an optical disk library device and includes a scissor-type conveying device including a slave table including a first driving mechanism used for horizontal movement of an optical-disk handling section that handles optical disks, a base table including a second driving mechanism for lifting and lowering movement, a link mechanism including a plurality of scissors links that couple the slave table and the base table and pins that combine crossing points of the scissors links crossing in an X shape, an opening and closing action of the scissors links being realized by the second driving mechanism, and a movable fixing mechanism that fixes the slave table and the base table to inner wall surfaces defining moving spaces of the slave table and the base table or releases the slave table and the base table from a fixed state to the inner wall surfaces.

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