Axial flow fan blade structure of air conditioner outdoor unit

The utility model relates to the technical field of axial-flow fan blades, in particular to an air conditioner outdoor unit axial-flow fan blade structure which comprises a hub and a plurality of blades, the hub comprises a connecting piece, a rotating shaft, an inner ring and an outer ring, and a plurality of first reinforcing ribs and a plurality of second reinforcing ribs are arranged on the side, close to the outside, of the connecting piece. The first reinforcing ribs and the second reinforcing ribs are evenly arranged in the circumferential direction of the inner ring in a staggered mode, the first reinforcing ribs and the second reinforcing ribs are provided with protruding parts extending to the connecting piece from the upper edges of the first reinforcing ribs and the second reinforcing ribs, and the side, away from the outside, of the connecting piece is provided with a plurality of third reinforcing ribs connecting the inner ring and the rotating shaft. The third reinforcing ribs are evenly arrang