Abstract: Disclosed are a robot cleaner, a controlling method of the same, and a robot cleaning system. The robot cleaner can perform a cleaning operation with respect to only a user's desired region, in a repeated and concentrated manner. Further, as the robot cleaner runs on a user's desired region in a manual manner, a designated region can be precisely set. Further, as the robot cleaner performs a cleaning operation by setting a user's desired region, only a simple configuration is added to a terminal device such as a remote control unit. Accordingly, additional costs can be reduced, and a malfunction can be prevented.