The utility model discloses an automatically cropped device for gauze mask bridge of nose strip, including base, feeding device, clamping device and rotary device, the upper end middle part of base isequipped with logical groove, the inslot bottom that leads to the groove is equipped with the feeding device, the backup pad is called to be equipped with by two peak of the staff terminal pairs of the U type support frame on the feeding device, the upper end of backup pad all is equipped with clamping device, the both sides of base face middle part symmetry is equipped with L type support column, and the top of L type support column all is equipped with vertical electric telescopic column, vertical electric telescopic column's top all is equipped with the curved bar, this an automatically cropped device for gauze mask bridge of nose strip, and easy operation has brought very big facility for user's use, according to the shearing demand, can pass through feeding device, clamping device and rotary device and realize compressing tightly and shearing the transport of gauze mask bridge of the nose strip, has ensured the quality of product, has promoted shearing efficiency to a certain extent.