The thermoplastic polyurethane yarn of the present invention is excellent in abrasion resistance and durability because it contains thermoplastic polyurethane and nanosilica particles having hydrophobic functional groups on the surface thereof and is excellent in durability of a fine denier yarn, and can have a yarn in a form of continuous yarn without breaking yarn development during spinning or stretching. In particular, it is excellent in color dispersibility, antifouling property, scratch resistance, moldability, and the like.