The invention belongs to the field of cosmetics and relates to novel application of leech, particularly to application of the leech to improvement of black eyes or eye puffiness, a composition prepared by using the leech as the main raw material and a preparation method of the composition. For making better use of the novel application of the leech, the invention provides the composition which is prepared by using the leech as the main raw material and is used for improving or removing the black eyes or the eye puffiness. The main active ingredient of the composition is any one of leech extract, natural hirudin and recombinant hirudin; and one or more of pearl, cassia seed extract and Indian buead extract can be selectively added into the composition to form a compound composition, wherein the weight ratios of all the ingredients of the compound composition are as follows: 5-25 parts of leech extract, natural hirudin or recombinant hirudin, 0-5 parts of pearl, 0-5 parts of cassia seed extract, 0-5 parts of Indian buead extract, and at least one of the pearl, the cassia seed extract and the Indian buead extract is not equal to zero. In the invention, the leech is utilized to improve or remove the black eyes and the eye puffiness, the effect is obvious and a novel selection is provided for the public.