Provided are a moving object, a cleaning robot, a floor condition determining device, a method of controlling the moving object, and a method of controlling the cleaning robot. The moving object includes a light source configured to irradiate a first light to a floor surface, a plurality of sensors for receiving light reflected from the floor surface at different positions from each other, and a controller configured to determine a condition of the floor surface on the basis of a result sensed by the plurality of sensors.