Safety anti-falling device for building construction

The utility model discloses a safety anti-falling device for building construction, which relates to the field of building construction, and comprises a first connecting block, one end of the first connecting block is provided with a first connecting ring, the other end of the first connecting block is provided with a rope fixing mechanism, and the rope fixing mechanism is connected with one end of a rope; a rope length adjusting mechanism is arranged at the other end of the rope, a second connecting block is arranged at the end, away from the rope, of the rope length adjusting mechanism, and a second connecting ring is arranged at the end, away from the rope length adjusting mechanism, of the second connecting block; the rope is sleeved with a hanging ring, and a connecting rope is arranged at the bottom end of the hanging ring. According to the anti-falling device, a worker can be prevented from falling during construction, the worker is allowed to have a larger moving range instead of a fixed point, and du