Hole protection device

The utility model provides a hole protecting device, and belongs to the technical field of building construction. According to the technical scheme, the hole protecting device is characterized by comprising a protecting cover plate and a fixing structure of the protecting cover plate, the fixing structure comprises a flower basket and screw rods arranged at the two ends of the flower basket in a threaded connection mode, the thread turning directions of the two screw rods are opposite, and the two screw rods are sleeved with adjusting plates; a fixing plate is arranged on the outer sides of the upper ends of the two adjusting plates, a top plate capable of abutting against the inner wall of the hole is arranged at the outer end of the fixing plate, nuts are arranged on the screw rods and located on the inner sides of the adjusting plates in a threaded connection mode, a baffle is arranged on the outer side of the upper portion of the top plate and located above the ground, the baffle is in lap joint with the