A cleaning robot capable of entering a region under an obstacle and cleaning by reducing a height of a LiDAR sensor, and a control method thereof are provided. The cleaning robot includes a main body, a driving device, a cleaning device, a LiDAR sensor and configured to be raisable and lowerable between a first position and a second position having different heights, a bumper sensor configured to detect a collision between the LiDAR sensor and an obstacle, an obstacle sensor configured to obtain information on an obstacle, and a processor configured to generate a cleaning map based on an output of the LiDAR sensor and an output of the obstacle sensor, and control the sensor driver to adjust a height of the LiDAR sensor based on at least one of the cleaning map, an output of the bumper sensor, or the output of the obstacle sensor.