Disclosed is a mobile robot and method generating a path of the mobile robot, capable of quickly moving the mobile robot to a location at which the mobile robot is able to detect a docking station. A first configuration space map is built by expanding an obstacle area including an obstacle by a first thickness, and a second configuration space map is built by expanding the obstacle area by a second thickness which is less than the first thickness. A path is generated by sequentially using the first configuration space map and the second configuration space map.