Provided is a robot cleaner. The robot cleaner includes a main body defining an outer appearance of the robot cleaner, a moving unit for moving or rotating the main body, a plurality of receiving units disposed in the main body to receive a user's voice command, and a control unit recognizing a call command occurring direction when the voice command inputted from the plurality of receiving units is a call command. The control unit controls the moving unit so that the main body is moved in the recognized call command occurring direction along the preset detour route.