An autonomous driving robot includes a storage unit including a housing, which provides a space for storing an article, and a shelf which is provided inside the housing and on which the article is loaded, a manipulator including a linear actuator, and a selective compliance articulated robot arm, which is coupled to the linear actuator, and a transport unit coupled to the storage unit, wherein a plurality of shelves are provided, some of the shelves are provided adjacent to one inner wall of the housing and spaced apart from each other in the vertical direction, and the other shelves are provided adjacent to another inner wall which faces the one inner wall and spaced apart from each other in the vertical direction, and the plurality of shelves extend toward a central portion of the housing, but extend to a point before reaching the central portion of the housing.