To provide an elastic yarn wound body having no slit on a paper pipe surface causing lowering of the strength of the paper pipe to be used, and having an end yarn protruding from a yarn wound body end surface.

In the elastic yarn wound body, an elastic yarn having 310 to 2480 dtex fineness is wound around the paper pipe in a form of cheese. No slit is provided on the surface of the paper pipe, the slit is provided between the paper pipes, and the end yarn protrudes from the yarn wound body end surface.