Roof water falling opening waterproof structure

The utility model relates to a roof water falling opening waterproof structure, relates to the technical field of building construction, and aims to solve the problem that rainwater permeates into a building from the side wall of a water falling opening, so that a building body is eroded and damaged. The roof water falling opening waterproof structure comprises a structural top plate, the water falling opening is reserved in the structural top plate, and a leveling layer is arranged on the structural top plate; a waterproof layer is arranged on the leveling layer, a drainage pipe is arranged below the water falling opening, a plurality of water stop steel plates are arranged at the water falling opening, one ends of the water stop steel plates are embedded in the structural top plate, the water stop steel plates form a pipe shape, and the ends, away from an embedded point, of the water stop steel plates are communicated with the drainage pipe. Rainwater permeating into a building from the side wall of the wat