The invention relates to a sole and provides an improved anti-slip sole and a shoe employing the same, which can not only improve the drainage rate of liquid in drainage gaps but also give the anti-slip property of a patterned structure into full play. The improved anti-slip sole comprises an undersole, wherein a plurality of anti-slip bulge rows are uniformly arranged on the undersole in the length direction, and drainage gaps are formed between adjacent anti-slip bulge rows; each anti-slip bulge row consists of a plurality of cross-shaped anti-slip bulges which are uniformly arranged in the width direction of the undersole, and the adjacent cross-shaped anti-slip bulges are mutually meshed; communicating gaps communicated with the drainage gaps are formed between the adjacent cross-shaped anti-slip bulges; and grooves are further formed in the center and the cross-shaped convex edges of each cross-shaped anti-slip bulge.