A nonskid spike structure is molded with the sole of a snowshoe or particular nonskid shoe, mainly comprising a large top end plate on the top edge of a metal spike body at the sole face and a middle plate with a smaller diameter spaced apart therefrom and positioned below the lower edge thereof, thereby forming a double-layer top edge. A central spike rod is extended downward with a convex spike head rod from the bottom thereof, allowing it to be inserted in a mold directly and integrated with the rubber sole upon molding, achieving the simple positioning in the mold and molding without deflection upon pressing, thereby allowing sole rubber material to cover the spike body directly. Whereby, the spike will not take off through the stable combination of the double plate edge and sole material, achieving the nonskid and safe effect upon the treading of the spikes on an icy surface.