Sealing waterproof structure for bridge pipeline penetrating floor

The sealing waterproof structure comprises a floor slab body, a mounting groove is formed in the top of the floor slab body, a first round hole is formed in the bottom of the floor slab body, the mounting groove communicates with the interior of the first round hole, and a storage hopper is arranged in the mounting groove; a second round hole is formed in the center of the bottom of the storage hopper, an annular block is fixedly installed in the center of the bottom of the inner wall of the storage hopper, a water storage hopper is arranged at the bottom of the floor slab body and located under the storage hopper, a third round hole is formed in the bottom of the water storage hopper, and a pipeline body is arranged between the storage hopper and the water storage hopper in a penetrating mode. Water-absorbent resin is arranged in an inner cavity of the storage hopper, and by means of a water storage and absorption structure in the floor body, in the using process, the waterproofness of a bridge pipeline pene