Disclosed are: a novel angiogenesis inducer having an excellent angiogenesis-inducing activity; and a novel polypeptide which can be used as an active ingredient of the angiogenesis inducer. Specifically disclosed are: an angiogenesis inducer comprising a polypeptide having a specific amino acid sequence as an active ingredient; and a novel polypeptide for use in the angiogenesis inducer. The angiogenesis inducer has excellent angiogenesis-inducing activity, and is therefore effective for the prevention, amelioration or treatment of a disease such as bedsore, wound, skin ulcer, occlusive arterial disease and arteriosclerosis obliterans.