The utility model discloses a robot device of work piece drilling, including operation panel, locating piece, crossbeam, fixed frame, drill bit and controller, its characterized in that: the operation panel setting on the support to be provided with stopper, stand on the operation panel, the locating piece setting on the stand to be provided with carrier bar, motor no. 1 on the locating piece, the carrier bar on be provided with spread groove no. 1, motor no. 2, crossbeam one end set up in the spread groove no. 1 on the carrier bar, fixed frame on be provided with connecting plate, cylinder, the spread groove no. 2 of connecting plate setting on the crossbeam in. The utility model discloses be provided with the stopper on the operation panel to be provided with the spacing groove on the stopper, can improve the stability of work piece in drilling process, and then improve the drilling quality of work piece, be provided with steady fixed ring between drill bit and fixed frame, improved the stability of drill bit in drilling process, and then improve the efficiency and the drilling accuracy of work piece drilling.