Disclosed is a fishing line comprising a composite yarn having a core-sheath structure. The composite yarn comprises a core portion constituted from a core yarn containing short fibers, and a sheath portion constituted from a sheath yarn containing long fibers. The long fibers of the sheath portion are intertwined with the short fibers of the core portion and the core yarn and sheath yarn of the fishing line are integrated using an adhesive resin. The rigidity of the core-sheath structure of the fishing line prevents separation of the core yarn and the sheath yarn and prevents the generation of nep, and the fishing line exhibits excellent operability, an adjustable specific gravity, excellent tensile strength, high weather resistance and high water resistance, low moisture content and low elasticity. In addition, the constituent fibers of cut portions of the fishing line do not unravel.