Horizontal adsorption type building construction paying-off auxiliary laser equipment

The invention discloses horizontal adsorption type building construction paying-off auxiliary laser equipment. The laser instrument comprises a laser instrument body, a leveling bubble and a second elastic piece. A connecting seat is fixedly mounted at the bottom of the laser instrument body; fixing cavities are fixedly formed in the outer walls of the two sides of the laser instrument body. A transparent acrylic plate is fixed to the edge of a bottom plate; the bottom of the transparent acrylic plate is vertically connected with one end of a lead screw, a first elastic piece and a pull rope are fixed to the edge of the top of a supporting head, the pull rope penetrates a bottom cover and is fixedly connected with a positioning ring, the end, located in the fixing cavity, of the push rod is provided with a limiting cavity, and the limiting cavity is fixed into the fixing cavity. According to the horizontal adsorption type building construction pay-off auxiliary laser equipment, point-to-point positioning of t