To obtain an interlining having the excellent touch and elegance of a rigid nap interlining and simultaneously having good elasticity and flexibility, thereby capable of being factually used for multi-purposes.

In an elastic interlining comprising a substrate and an adhesive layer disposed thereon, especially an elastic setting interlining, multi-component fibers comprising at least two different polymers, especially two component fibers comprising a polyester, a polyamide and/or polyacrylonitrile, are used for the substrate, thereby enabling to produce an elastic interlining capable of being easily napped.