A left atrial appendage occluder, including a closure disc, a bracket located on one side of the closure disc, and a connecting member connecting the closure disc and the bracket； the bracket includes a first fixing connection member, a second fixing connection member, and a number of support rods； the first ends of the plurality of support rods are collapsed and secured by the first fixing connection member； the second ends of the plurality of support rods are collapsed and secured by the second fixing connection member； a connecting member is connected to the first fixing connection member. The bracket is arranged such that the two ends constituted by at least two support rods have a closed structure, thus increasing the area of contact between the outer surface of the bracket and the left atrial appendage.
