The invention discloses a roving tail yarn removing machine. The roving tail yarn removing machine comprises a mounting platform, a rotating device and a lifting device, wherein a group of yarn tube shafts are arranged on the mounting platform; each yarn tube shaft is driven to rotate by a rotating motor of the rotating device through a rotating transmission mechanism; the lifting device is provided with a lifting motor; the lifting motor drives the mounting platform to move vertically through a lifting transmission mechanism. The roving tail yarn removing machine is used for solving the problem that tail yarns are not scattered thoroughly. According to the roving tail yarn removing machine, one rotating motor drives the plurality of yarn tube shafts to rotate through the rotating transmission mechanism; one lifting motor drives the mounting platform to move vertically through the lifting transmission mechanism; one cylinder pushes a suction nozzle mounting frame which is provided with a plurality of suction nozzles to get close to or leave tail yarn tubes. Through the structure, the mechanical device of the roving tail yarn removing machine is greatly simplified, and the use of components is reduced, so that pneumatic and electric control is relatively simple; the work reliability is improved; the cost is reduced; the number of the yarn tube shafts which are driven by the mounting platform can be adjusted flexibly according to a requirement.