The present invention relates to a method of preparing a suture anchor using a suture and a prepared suture anchor. A knitting member (100) cut at a predetermined width and length while having a plurality of knots (10a) is inserted into a hole 1a of a bone 1 using an anchor inserting device 200, and a second suture 20 provided between one knot 10a of the plurality of knots and another knot 10a thereof is pulled rearwards, and thus the knitting member (100) is deformed from a long rod shape to a lump shape the bone 1. Accordingly, the knitting member (100) has a volume larger than a diameter of the hole 1a, and the knitting member (100) deformed into the lump shape is configured not to be removed from the hole 1a of the bone 1 even when the second suture 20 is further pulled in a rear direction.
