Safe anti-falling device for house building construction

The utility model belongs to the technical field of house building construction, particularly relates to a safety anti-falling device for house building construction, and aims to solve the problems that when an existing anti-falling net is used, the anti-falling net is easy to tear and damage due to overlarge impact force generated by materials or personnel falling from high altitude during falling, and certain potential safety hazards exist. The device comprises two bases, side shafts are rotationally arranged on one sides of the bases, screw rods are rotationally arranged in the bases, the side shafts extend into the bases, bevel gears are fixedly arranged on the outer sides of the side shafts and the screw rods in a sleeving mode, the two bevel gears are meshed with each other, and the screw rods extend to the positions above the bases and are provided with supports in a threaded sleeving mode. The anti-falling net is reasonable in structural design, impact force generated during falling can be buffered wh