The invention discloses an improved fan blade structure. The improved fan blade structure comprises a hub, a connecting piece and multiple fan blades; the connecting piece is provided with a sleeving part and multiple embedding grooves, and sleeves the hub through the sleeving part; the embedding grooves are annularly arranged in the connecting piece near the outer edge; the fan blades are provided with first ends and second ends; and the first ends are embedded in the embedding grooves to combine with the connecting piece. The improved fan blade structure can solve the loss caused by combination of traditional fan blades with the hub due to the factor that the traditional fan blades and the hub are not integrally-molded structural bodies.