Waterproof penetration sleeve and construction method thereof

The invention discloses a waterproof penetration sleeve and a construction method thereof. The waterproof penetration sleeve comprises a sleeve body, a wing ring, two flexible water stop rings, checkrings, connecting plates, a flexible cushion, bolt connecting pieces, reinforcing ribs and pressing holes, wherein the wing ring is connected with the sleeve body and the connecting plates in a welding manner; the check rings are connected with the sleeve body in a welding manner; the reinforcing ribs are connected with the connecting plates and the sleeve body in a welding manner; the flexible cushion is connected with the connecting plates through the bolt connecting pieces; a closed pressing space is defined by the two flexible water stop rings and the sleeve body; the flexible water stop rings are embedded in a space defined by the check rings; and the pressing holes are formed between the two flexible water stop rings. The waterproof penetration sleeve and the construction method canavoid the water seepage of