To provide a parent yarn of hot melt coated separated yarns capable of producing hot melt-coated monofilaments having a good yarn quality and hot melt coating effect.

This hot melt coated separated yarn consisting of sheath core type composite multifilament yarns is characterized in that the core component is a polyester, the sheath component is a low melting point polyester having its melting point lower than that of the core component by ≥20°C and the ratio of sheath core cross-sectional areas of the hot melt coated monofilament after the separation of the fibers is (40/60)-(90/10).