An apparatus of storing container includes a stocker including shelves being configured to support containers, respectively, a purging unit being configured to provide a purge gas for each of the shelves to purge the containers when the stocker is in a purge mode, and to provide the purge gas only for each of the shelves when the stocker is in a normal mode, an inspection unit being configured to inspect a purge quality of the purge gas provided to each of the shelves while the stocker is in the normal mode, and a control unit being configured to change the stocker between in the purge mode and in the normal mode, and being configured to control the purging unit according to a switch between the purge mode and the normal mode. Thus, the apparatus has improved operation efficiency.