Anti-leakage cover plate expansion joint structure

The utility model relates to the technical field of building construction, and discloses an anti-seepage cover plate expansion joint structure which comprises an expansion joint body and concrete floors arranged on the two sides of the expansion joint body, and a water stop strip covering an opening in the top of the expansion joint is arranged at the top of the expansion joint. The two ends of the water stop strip are fixed to the top faces of the concrete floors on the corresponding sides through first expansion anchor bolts correspondingly, the middle of the water stop strip is arranged in a downwards-sunken mode, and a water guide cover plate covering an opening in the bottom of the expansion joint is arranged at the bottom of the expansion joint. The two ends of the water guide cover plate are fixed to the bottom faces of the concrete floor slabs on the corresponding sides through second expansion anchor bolts, the middle of the water guide cover plate is arranged in a downwards-sunken mode, and the wate