Claying trowel for building construction

The utility model discloses a plastering trowel for building construction, which relates to the technical field of plastering trowels and comprises a plastering trowel main body, a switching folding edge is mounted on one side of a trowel body at the bottom of the plastering trowel main body, long screws are connected to two ends of one side of the switching folding edge, and short screws are connected to two ends of the other side of the switching folding edge. The switching folded edge is composed of a sharp toothed plate area, a square toothed plate area and square containing grooves, the square toothed plate area and the sharp toothed plate area are integrally formed in a step shape, the square toothed plate area is located on one side of the sharp toothed plate area, and the square containing grooves are formed in the top or bottom surfaces of the square toothed plate area and the sharp toothed plate area respectively; according to the utility model, the overall use mode of the utility model can be chang