To provide a core-sheath type vinylidene-based conjugated fiber excellent in curl retention properties and capable of improving processes such as a curl processing, a thread setting and the like.

The core-sheath phases of this core-sheath type vinylidene chloride-based conjugated fiber comprise a vinylidene chloride-based resin and a thermoplastic resin having 0.85-1.00 g/cc density. The thermoplastic resin phase having 0.85-1.00 g/cc density is a polypropylene-based resin phase, the sheath phase 1 is the vinylidene chloride-based resin phase. The core-sheath type vinylidene chloride-based conjugated fiber is used for artificial hairs for dolls and/or wigs.