To provide a stent transplantation piece which attains the compatibility of contradicting requests of low permeability, high strength and flexibility for expansion and shrinkage in a radial direction.

The stent transplantation piece 18 for embedment past a vascular cavity is formed of a structure including a elastic tubular grid member 34 which consists of metallic or polymer monofibers and are knitted with each other having elasticity, a tubular sleeve 40 which consists of polymer multifiber yarn and are knitted with each other and an adhesive layer which integrally bonds the sleeve 40 and the grid member 34 therebetween.