Abstract: A hanging ring used in a curtain by punching from a metal sheet comprises: a ring body containing a ring piece having a round hole, an extending piece one end of which extends from the ring piece and an extending bar extending from another end of the extending piece. One end of the extending bar is pressed as a rivet end for being fixed in a clip. A lateral extending frame is punched from lateral sides of the enhancing edge and the extending piece. The lateral extending frame has a non-plane locking ring. A locking hole is punched from the plane locking ring. The non plane locking ring is twisted through an angle so that it is at different orientation from the other part of the lateral extending frame. An inner wall of the locking hole is a threaded wall for locking a screw rod of a decoration.