Double-layer drainage antiseep roof double-layer drainer

The utility model discloses a double-layer drainage antiseep roof double-layer drainer which comprises a drainage door drain. The upper opening portion of the drainage floor drain is provided with an upper filter screen through a pressing plate, the lower opening portion of the drainage floor drain is sealed, a plurality of evenly-arranged water leaking openings are formed in the side wall of the drainage floor drain, the lower end of the drainage floor drain is arranged in an outer-layer water falling hopper and is connected with the outer-layer water falling hopper through a separating plate, a lower filter screen is arranged on the opening portion of the outer-layer water falling hopper, and the lower portion of the outer-layer water falling hopper is connected with a sewer line. The double-layer drainage antiseep roof double-layer drainer meets the roof drainage antiseep requirement, meanwhile, the cost is low, any other materials are not needed, manufacturing is easy, combining is convenient, the structu