Building construction springboard support

The utility model relates to the technical field of building construction tools, and discloses a building construction springboard support which comprises a bottom plate, grooves are symmetrically formed in the top of the bottom plate, fixing blocks are detachably connected to the interiors of the two grooves, and mounting plates are fixedly connected to the tops of the two fixing blocks. According to the building construction springboard support, the two fixing blocks are placed in the two grooves, then the four first square plates are fixed through first screws and first screw holes, then the base is placed in the circular groove, and the two fixing blocks and the four first square plates are fixed through the first screws and the first screw holes; the base is fixed through second screws and second screw holes, then a second square plate is fixed through third screws and third screw holes, and then a first connecting block and a positioning column are fixed through small bolts, so that the stability of the