A lung volume-reducing elastic implant (2) and a lung volume-reducing instrument； the lung volume-reducing elastic implant (2) is tubular and comprises a proximal implant end (201), an elastic deformation part (205) and a distal implant end (202)； the elastic deformation part (205) is located between the proximal implant end (201) and the distal implant end (202), and the elastic deformation part (205) has a shape memory characteristic； the lung volume-reducing elastic implant (2) is opened at the proximal implant end (201)； the elastic deformation part (205) is provided with a plurality of grooves (204) at intervals along the longitudinal direction thereof； each groove (204) communicates with the tube cavity of the elastic deformation part (205)； the lung volume-reducing instrument comprises the lung volume-reducing elastic implant (2) and a delivery device (1) matching same； the delivery device (1) comprises a guidewire (101) and a hollow push piece (110)； the lung volume-reducing elastic implant (2) is detachably connected to the distal end of the hollow push piece (110) via the proximal implant end (201)； and the guidewire (101) passes through the tube cavity of the lung volume-reducing elastic implant (2) and the tube cavity of the hollow push piece (110). The lung volume-reducing instrument is more convenient for an operation and takes shorter time, and avoids damage to the inner wall of the bronchia, reducing the occurrence of pneumothorax.
