Building house blank wall treatment device and method

The invention discloses a building house blank wall treatment device and method. The device comprises a base, and the top of the base is provided with a wall surface whitewashing device; the wall surface whitewashing device comprises a white paint bucket, a positioning piece, a supporting plate, a servo motor, a positioning plate, a driving gear, a driven gear, a lead screw, a first fixed plate, asecond fixed plate, a movable plate, sliding blocks and a driving whitewashing piece; the white paint bucket is movably connected to the top of the base through the positioning piece, the supportingplate is fixedly connected to the top of the base, and the servo motor is fixedly connected to one side of the top of the supporting plate through the positioning plate. The building house blank walltreatment device and method have the advantages that the automation degree of the device is high, and the situation is avoided that in the process of manually whitewashing a blank wall surface, sincepaint contains a trace amoun