Wheel and track hybrid mobile platform device for professional service robot mechanism has been applied to overcome rugged terrain of the present invention, mainframe; The motor portion installed inside the main frame; A plurality of wheels for driving the driving power of the service received from the motor unit; A plurality of sprockets for driving the power being provided from the motor unit; A plurality of tracks in accordance with the rotating operation of the plurality of sprockets located in the outside of the plurality of sprockets; And supporting the plurality of sprockets, the motor unit being provided to power the movement erected the vertical width of the track to be greater than the circumference of the wheel to the vertical for the traveling, the vertical width of the track than the circumference of the wheel for the drive be reduced by moving lying horizontally in order to transform, a plurality of tracks depending on the height of each arm for adjusting the vertical width of the stairs track entry for the transformation of the lifting or lowering of the stairs as well as a track; Flat driving the control to move the motor becomes a plurality of track laid out by the horizontal arm and driving on rugged terrain has a vertical width of the plurality of tracks cancer vertically in order to transform the track to be larger than the circumference of the wheel for the travel a controller for controlling the motor to move erected; provided with a, has a flat driving wheel for driving the plurality of traveling by the traveling wheels exposed to the outside tracks, when driving on rugged terrain has a plurality of wheels for running the into the interior characterized in that the track to be run by the track.
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