An angle-adjusted elbow joint structure is composed of a first pivoting plate and a second pivoting plateA central shaft is formed which penetrates the axis of the first pivoting plate and the second pivoting plate to closely pivot the two. A wearable cushion is disposed between the first pivoting plate and the second pivoting plate, and one of the side surfaces of the wearable cushion is provided with a plurality of circular centers arranged in a center. Positioning a pocket, the second pivoting plate facing the positioning pocket is at an eccentric position and at a position corresponding to the positioning pocket, at least an axial cylinder is disposed in an axial manner, and a spring is disposed in the axial cylinder and is disposed by the spring a ball that is pushed up, the ball can be embedded in the corresponding positioning pocket, and the first pivoting plate and the second pivoting plate have better fit tightness by the setting of the wear pad, suitable for application The light weight object is connected to one of the pivot plates. If the heavier object is to be connected to one of the pivoting plates, the setting of the above-mentioned wear-resistant cushion is eliminated, and the surface of the other pivoting plate facing the ball is provided with the center of the central axis as the center and A plurality of positioning pockets are arranged in a circular shape, and a part of the bead surface of the ball is embedded in the corresponding positioning pocket to position the pivoting angle of both the first pivoting plate and the second pivoting plate. The pivot plate of the axial tube is further provided with a limiting hole, and the limiting hole is located on the same circumference as the hole center of the axial tube, and a bolt is arranged inside the limiting hole, and the end of the bolt is The system can be directly or indirectly embedded in a corresponding positioning pocket to position the pivoting angle. Thereby, the pivoting angle of both the
