A left atrial appendage occluder and a fabricating method thereof are provided. The left atrial appendage occluder includes a plugging column and a anchor located on the plugging column, wherein the plugging column is woven from an elastic metal wire, or woven from an elastic metal wire and an elastic metal sheet, the anchor is made by partially flattening and then cutting the elastic metal wire, or the anchor is made by cutting the elastic metal sheet. In the above-described left atrial appendage occluder, firstly, the anchor is formed on the elastic metal wire and/or the elastic metal sheet, and then the elastic metal wire and/or the elastic metal sheet with the anchor are/is co-woven with other elastic metal wire to form the plugging column of the left atrial appendage occluder. Therefore, the amount of the anchor is not limited, and a plurality of anchors can be provided.