The utility model relates to a co-rotating conical twin-screw color masterbatch granulator which comprises a granulating device 1, conical screws 2, an air outlet 3, a cylinder 4, a heating ring 5, a feeding device 6, a distribution box 7, a reduction gearbox 8, a coupling 9, a driving motor 10 and a rack 11 and is characterized in that the two conical screws rotate in the cylinder in the same direction; the revolution of the screw ranges between 0 and 150rpm; and the effective length-diameter ratio of each screw is 30-60:1. The co-rotating conical twin-screw color masterbatch granulator can replace the existing two-stage granulator unit (which comprises a parallel twin-screw extruder and a single-screw extruder) for color masterbatch granulation and is novel color masterbatch granulation equipment.