The present invention addresses the problem of providing an artificial blood vessel which is able to retain mechanical properties required for an artificial blood vessel, rarely undergoes the formation of thrombi when grafted into a blood vessel having a small or medium diameter, and has such an excellent cell colonization property that endothelial cells can be colonized rapidly to form an endothelial tissue. Thus, the present invention provides an artificial blood vessel comprising a tubular woven fabric which is composed of at least two types of polyester fibers, i.e., a multifilament yarn A and a multifilament yarn B, and has an inner diameter of 8 mm or less and a layer thickness of 50 µm or more and 250 µm or less, wherein the multifilament yarn A has a single fiber fineness of 1.0 dtex or more and a total fineness of 33 dtex or less, the multifilament yarn B has a single fiber fineness of 0.08 dtex or less and a total fineness of 66 dtex or less, and the multifilament yarn B forms loops on the inner wall surface of the composite tubular woven fabric.
