The invention provides a left atrial appendage occlude, which comprises an occlusion plate, a connection middle shaft and a support plate. The connection middle shaft connects the occlusion plate andthe support plate. The left atrial appendage occluder further comprises a support net and an attached plate. The support net is arranged at the far end of the support plate and fixedly connected withthe far end of the support plate. The attached plate is fixedly installed at the far end of the support net. The left atrial appendage occluder has the following beneficial effect: as the attached plate is additionally arranged and placed deep in the left atrial appendage, the occlusion plate is further fixed, and the risk of occlude fall-off is reduced.