The utility model relates to an universal ball-and-socket joint, wherein a first tubular member and a second tubular member are connected to move universally relative to each other rotatablely, a connection end of the first tubular member forms a hollow outer sphere part, the other end forms a flange, a connection end of the second tubular member forms a hollow inner sphere part connected with the outer sphere part of the first tubular member, the other end forms a flange, the inner sphere part may be sleeved in the outer sphere part rotatably, a cirumferential wall of the inner sphere part of the second tubular member is sleeved with an annular outer liner corresponding with a connection position of the first tubular member and the second tubular member, the outer liner is provided with a plurality of screws along its radial direction, the outer liner is permanently connected with the first tubular member through the screws, and a central axis of the first tubular member has an included angle with a central axis of the second tubular member. By means of connecting two pipelines through two flange connecting members locating on two ends of the universal ball-and-socket joint, the middle outer sphere part and the inner sphere part may be connected closely and rotatably, and a work efficiency is improved greatly.