The utility model relates to a profile of tooth conductor twist pair cable, profile of tooth conductor twist pair cable include that castellated first conductor is personally submitted to the outward appearance, the cladding is in the outer first insulation layer of first conductor. The utility model discloses a be the profile of tooth with the surface setting of first conductor to the relative position that the messenger won between conductor and the first insulation layer is stable, squints difficult emergence of transposition in -process, and the structure is more stable compact.