A conveyance system for conveying an object to be conveyed and to which identification information that is uniquely identifiable is imparted, the conveyance system comprising: a plurality of storage racks provided near semiconductor manufacturing devices (60, 62) and adapted to store therein the object; a stacker crane adapted to carry the object into the storage racks and the object out of the storage racks, wherein the stacker crane is movable in a direction substantially orthogonal to a facing direction of the semiconductor manufacturing devices (60, 62), wherein the stacker crane is adapted to: stop in front of a certain storage rack; take out the object that is stored in the storage rack using transfer arms; travel along rails riding on a traveling truck; and transfer the object to a loading port of one of the semiconductor manufacturing devices (60, 62), or stop in front of the loading port of one of the semiconductor manufacturing devices (60, 62); carry out one of the object that is placed on the loading port using the transfer arms; travel to a destination along the rails riding on the traveling truck to transfer the object, an overhead carrier adapted to travel along tracks provided on a ceiling portion and to raise and to lower a gripper adapted to grip the object to convey the object; identification-information acquisition means adapted to acquire the identification information imparted to the object, the identification-information acquisition means being provided to the stacker crane; and control means adapted to control, when the identification information acquired by the identification-information acquisition means coincides with identification information contained in a conveyance command for the object, the stacker crane to convey the object to a destination specified in the conveyance command, wherein the upper portions of the storage racks are open to function as ports for passing the object between the stacker crane and the overhead carrier, characterized in that the storage racks are arranged with the loading ports of the semiconductor manufacturing devices (60, 62) interposed therebetween, a plurality of overhead carriers is provided, each overhead carrier being an overhead hoist transport, OHT, and is adapted to convey the object along the tracks suspended from the ceiling portion, each overhead carrier is adapted so as, at the loading ports, to directly convey in and out the object. a plurality of storage racks provided near semiconductor manufacturing devices (60, 62) and adapted to store therein the object; a stacker crane adapted to carry the object into the storage racks and the object out of the storage racks, wherein the stacker crane is movable in a direction substantially orthogonal to a facing direction of the semiconductor manufacturing devices (60, 62), wherein the stacker crane is adapted to: stop in front of a certain storage rack; take out the object that is stored in the storage rack using transfer arms; travel along rails riding on a traveling truck; and transfer the object to a loading port of one of the semiconductor manufacturing devices (60, 62), or stop in front of the loading port of one of the semiconductor manufacturing devices (60, 62); carry out one of the object that is placed on the loading port using the transfer arms; travel to a destination along the rails riding on the traveling truck to transfer the object, an overhead carrier adapted to travel along tracks provided on a ceiling portion and to raise and to lower a gripper adapted to grip the object to convey the object; stop in front of a certain storage rack; take out the object that is stored in the storage rack using transfer arms; travel along rails riding on a traveling truck; and transfer the object to a loading port of one of the semiconductor manufacturing devices (60, 62), or stop in front of the loading port of one of the semiconductor manufacturing devices (60, 62); carry out one of the object that is placed on the loading port using the transfer arms; travel to a destination along the rails riding on the traveling truck to transfer the object, an overhead carrier adapted to travel along tracks provided on a ceiling portion and to raise and to lower a gripper adapted to grip the object to convey the object; identification-information acquisition means adapted to acquire the identification information imparted to the object, the identification-information acquisition means being provided to the stacker crane; and control means adapted to control, when the identification information acquired by the identification-information acquisition means coincides with identification information contained in a conveyance command for the object, the stacker crane to convey the object to a destination specified in the conveyance command, wherein the upper portions of the storage racks are open to function as ports for passing the object between the stacker crane and the overhead carrier, characterized in that the storage racks are arranged with the loading ports of the semiconductor manufacturing devices (60, 62) interposed therebetween, a plurality of overhead carriers is provided, each overhead carrier being an overhead hoist transport, OHT, and is adapted to convey the object along the tracks suspended from the ceiling portion, each overhead carrier is adapted so as, at the loading ports, to directly convey in and out the object.