A library apparatus includes a housing that has a magazine loading opening, the magazine storing a plurality of cartridges; a reader that reads an identifier provided on each cartridge stored in the magazine, the reader reading the identifiers while the magazine is being inserted through the magazine loading opening and pulled to a preset loading completion position; a transportation mechanism that is movable, the transportation mechanism including a removal mechanism that selectively removes one of the cartridges, and a connection member to be connected to the magazine inserted; and a controller that controls the transportation mechanism, wherein the transportation mechanism transports the removed cartridge to a cartridge processing unit, wherein the controller controls the transportation mechanism to stand by on the magazine loading opening side when the magazine is not loaded, and pull the magazine to the loading completion position when the controller detects that the magazine is inserted.