The invention provides a novel groove drum which comprises a drum body and drum covers. The drum body is made of stainless steel, yarn guide grooves are disposed on the surface of the drum body which is of a hollow structure, and the inner wall of the drum body does not contact with a rotating shaft. The drum covers are arranged at the two ends of the drum body, the drum covers are made of engineering plastics, the drum covers are in threaded connection with the drum body, positioning through hole structures are disposed at the contact portions of the drum body and the drum covers, and positioning of the groove drum is achieved through set screws. The novel groove drum is unique in structural design, the drum body is of a hollow structure, the self weight of the groove drum is effectively reduced, and energy consumption is reduced. The groove drum is beneficial for heat dissipation, reduces static electricity, and improves yarn guide quality. Meanwhile, due to the fact that the positioning through hole structures are disposed on the groove drum and the drum covers and the set screws are used in a matched mode, the groove drum is positioned firmly, operation is stable, and service life of the groove drum is effectively prolonged.