An electrical plug connector includes a metallic shell, an insulated member, plug terminals, and grounding members. The insulated member is in the metallic shell. The plug terminals are held in the insulated member. The grounding members and the insulated member are molded as a one-piece member, thereby reducing the production steps as well as reducing production of defect products. Moreover, the first curved contact portion extends toward the metallic shell and effectively contacts the metallic shell, and the second curved contact portion extends toward the ground terminal and effectively contacts the ground terminal.