Safety protection plate for construction engineering pay-off hole

The utility model relates to the technical field of constructional engineering, in particular to a constructional engineering pay-off hole safety protection plate which comprises a protection plate body, the bottom end of the protection plate body is fixedly connected with an adjusting plate through a plurality of telescopic rods, the left side and the right side of the bottom end of the adjusting plate are each provided with a convex groove, and convex blocks are arranged in the convex grooves in a sliding mode. Adjusting screw rods are in threaded connection with the interiors of the two convex blocks, clamping plates are fixedly connected to the bottom ends of the two convex blocks, an empty groove is formed in the middle of the interior of the adjusting plate, first bevel gears are fixedly connected to the ends, extending into the empty groove, of the two adjusting screw rods, and a rotating shaft is rotationally connected to the adjusting plate; the bottom end of the rotating shaft extends into the empty