Safe anti-falling device

The utility model relates to the technical field of house building construction, in particular to a safety anti-falling device which comprises a lifting plate, a lifting mechanism is arranged at the bottom end of the lifting plate, the lifting mechanism comprises at least two limiting plates, a supporting plate and a connecting plate, and the adjacent ends of the two limiting plates are installed at the bottom end of the lifting plate respectively. The interiors of the supporting plates are of hollow structures, the supporting plates correspond to the limiting plates in number and position, and the ends, away from the lifting plate, of the limiting plates penetrate through the top ends of the supporting plates and extend to the inner sides of the supporting plates. The safety anti-falling device is novel in structure, easy to operate and easy to master; and meanwhile, the lifting mechanism is provided with a limiting plate, a supporting plate, a connecting plate and other assemblies, the lifting plate can be