A bast fiber treatment roll set comprises an upper roll and a lower roll. The lower roll comprises a lower front roll and a lower rear roller. The upper roll and the rear roll are mounted on a roll shaft frame, and a pressure spring is arranged on the roll shaft frame and used for adjusting an interval between the upper roll and the lower roll and pressure applied to to-be-treated bast fiber by the upper roller. The surface of the upper roll is provided with a friction layer, the surface of the upper roll is further provided with a nail-shaped protrusion, and the nail-shaped protrusion penetrates the friction layer and is protruded out of the surface of the friction layer. The lower roll comprises the lower front roll and the lower rear roll which are arranged in pairs. The surfaces of both the lower front roll and the lower rear roll are provided with a plurality of stripping rings, the stripping rings are arranged around the lower front roll and the lower rear roll and disposed on the lower front roll and the lower rear roll at equal intervals, and the stripping rings located on the lower front roll and glass rings located on the lower rear roll are staggered.