The invention discloses a hub reduction gear case end cover, which comprises a cover body. The cover body is of a basin-type structure; the inner side of the cover body is provided with a snap ring groove, a snap ring is arranged in the snap ring groove, an annular magnet is arranged between the snap ring and the basin bottom of the cover body; an oil drain hole and a backflow hole communicated with the oil drain hole are formed in the top end of the cover body. The hub reduction gear case end cover adopting the structure disclosed by the invention has the advantages that an absorbent refining effect can be exerted on bearing falling objects or gear abrasion objects in gear oil in a hub reduction gear axle case, the inside abrasion of a hub reduction gear is reduced, and the service life of the hub reduction gear is prolonged.