Abstract: An electrical connector including a plastic base frame having a plurality of terminal insertion holes, a plurality of terminals respectively inserted into the terminal insertion holes and mounted in the base frame and respectively welded to a cable, a metal cover shell covered on the base frame, and a packing plastic molded on the base frame in flush with the metal cover shell and covered over the terminals and one end of the cable, wherein the base frame has a plurality of flexible projecting strips respectively extended from the periphery of the terminal insertion holes toward the cable and embedded in the packing plastic, the flexible projecting strips being deformed by heat to block up one end of the terminal insertion holes during the molding of the packing plastic; the metal cover shell has filling holes corresponding to the flexible projecting strips for the filling of the sealing plastic fluid.