A hybrid suspension arm comprising: a ball joint and an arm body, wherein the ball joint comprises: a ball stud comprising a spherical ball and a rod extending upwardly from the ball; a bearing (120, 220) comprising an upper outer circumferential surface (121, 221) and a lower outer circumferential surface (122, 222) and configured to accommodate the ball; and characterized in that the hybrid suspension arm further comprises a case comprising an upper inner circumferential surface which entirely comes into contact with the upper outer circumferential surface (121, 221) of the bearing (120, 220) and a stopper to which an upper end (123, 224) of the bearing (120, 220) is caught, wherein the case of the ball joint is coupled to the arm body; wherein an insert molding part is formed to surround a portion of the lower outer circumferential surface (122, 222) of the bearing (120, 220), a portion of the case, and a portion of the arm body so as to couple the bearing (120, 220), the case, and the arm body to each other. a ball joint and an arm body, wherein the ball joint comprises: a ball stud comprising a spherical ball and a rod extending upwardly from the ball; a bearing (120, 220) comprising an upper outer circumferential surface (121, 221) and a lower outer circumferential surface (122, 222) and configured to accommodate the ball; and characterized in that the hybrid suspension arm further comprises a case comprising an upper inner circumferential surface which entirely comes into contact with the upper outer circumferential surface (121, 221) of the bearing (120, 220) and a stopper to which an upper end (123, 224) of the bearing (120, 220) is caught, wherein the case of the ball joint is coupled to the arm body; wherein an insert molding part is formed to surround a portion of the lower outer circumferential surface (122, 222) of the bearing (120, 220), a portion of the case, and a portion of the arm body so as to couple the bearing (120, 220), the case, and the arm body to each other. a ball stud comprising a spherical ball and a rod extending upwardly from the ball; a bearing (120, 220) comprising an upper outer circumferential surface (121, 221) and a lower outer circumferential surface (122, 222) and configured to accommodate the ball; and characterized in that the hybrid suspension arm further comprises a case comprising an upper inner circumferential surface which entirely comes into contact with the upper outer circumferential surface (121, 221) of the bearing (120, 220) and a stopper to which an upper end (123, 224) of the bearing (120, 220) is caught, wherein the case of the ball joint is coupled to the arm body; wherein an insert molding part is formed to surround a portion of the lower outer circumferential surface (122, 222) of the bearing (120, 220), a portion of the case, and a portion of the arm body so as to couple the bearing (120, 220), the case, and the arm body to each other. a case comprising an upper inner circumferential surface which entirely comes into contact with the upper outer circumferential surface (121, 221) of the bearing (120, 220) and a stopper to which an upper end (123, 224) of the bearing (120, 220) is caught, wherein the case of the ball joint is coupled to the arm body; wherein an insert molding part is formed to surround a portion of the lower outer circumferential surface (122, 222) of the bearing (120, 220), a portion of the case, and a portion of the arm body so as to couple the bearing (120, 220), the case, and the arm body to each other.