A left auricle occluder (1), comprising a stent front end (11), a stent rear end (12), a support (13), and a stent membrane (14). The stent front end (11) and the stent rear end (12) are connected by means of the support (13) the stent membrane (14) covers on the surfaces of the stent front end (11) and the stent rear end (12) the stent front end (11) and the stent rear end (12) can be compressed and deformed the left auricle occluder (1) is mounted into the left auricle (2), and then the stent front end (11) and the stent rear end (12) are restored to the original shapes an angle of 5-30° is included between the stent front end (11) and the stent rear end (12) the lantern-shaped memory alloy of the stent front end (11) regains its shape and is fixed to the inner wall of the left auricle (2) as the removal of a delivery sheath, the umbrella-shaped memory alloy of the stent rear end (12) regains its shape and is in close contact with the ostium of the left auricle, to effectively prevent the occluder (1) from further entering the inner cavity of the left auricle (2) or falling off the stent membrane (14) can effectively prevent blood clots from being omitted since there is no barb structure on the surface of the stent membrane (14), the position of the occluder (1) can be adjusted in the left auricle (2) with different structures, so that the complexity of an operation is reduced.Linvention concerne un dispositif docclusion doreillette gauche (1), comprenant une extrémité avant dendoprothèse (11), une extrémité arrière dendoprothèse (12), un support (13) et une membrane dendoprothèse (14). Lextrémité avant de lendoprothèse (11) et lextrémité arrière de lendoprothèse (12) sont reliées au moyen du support (13) la membrane dendoprothèse (14) recouvre les surfaces de lextrémité avant de lendoprothèse (11) et de lextrémité arrière de lendoprothèse (12) lextrémité avant de lendoprothèse (11) et lextrémité arrière de lendoprothèse (12) peuvent être comprimées et déformées
