The invention discloses a shearing device capable of increasing the efficiency. The shearing device comprises a mounting rack, a transmission system and a cutting system; the transmission system and the cutting system are arranged on the mounting rack. With the adoption of the shearing device capable of increasing the efficiency, a paper tube can be quickly cut, and the cutting length of the paper tube can be quickly and timely adjusted synchronously; the use is convenient and practical; in addition, the structure is simple, the cost is low, and the shearing device is applicable to the production of the paper tubes of small and medium-sized enterprises.