Disclosed are a left atrial appendage occlusion device (100, 300) and a left atrial appendage occlusion system. A connecting member (140, 240, 340, 440) comprises a first unit (140a, 240a, 440a) and a second unit (140b, 240b, 440b), wherein the first unit (140a, 240a, 440a) is connected to a first frame (110, 310, 410), the second unit (140b, 240b, 440b) is connected to a second frame (120, 320, 420), and the first unit (140a, 240a, 440a) is rotatably connected to the second unit (140b, 240b, 440b). Alternatively, the connecting member (140, 240, 340, 440) comprises the first unit (140a, 240a, 440a), the second unit (140b, 240b, 440b) and a third unit (140c, 240c), wherein the first unit (140a, 240a, 440a) is connected to the first frame (110, 310, 410), the second unit (140b, 240b, 440b) is connected to the second frame (120, 320, 420), the first unit (140a, 240a, 440a) is rotatably connected to the third unit (140c, 240c), and the second unit (140b, 240b, 440b) is rotatably connected to the third unit (140c, 240c). Thereby, with regard to left atrial appendages having lumens of different shapes, the relative positions of the first frame (110, 310, 410) and the second frame (120, 320, 420) can be changed by means of the connecting member (140, 240, 340, 440), i.e., the shape of the left atrial appendage occlusion device (100, 300) is adjusted so as to be capable of being adapted to left atrial appendages having lumens of different shapes.
