A cable connector assembly and the manufacturing method thereof are disclosed in the invention. The cable connector assembly includes a plug connector including a conductive module and a metal casing having a fixing and a mating section; a printed circuit board being electrically connected to the plug connector and a cable assembly which includes a wire retainer, wires, and an insulating layer; an inner casing being insert-molded onto the printed circuit board, the wire retainer, and the fixing section; a stress releasing element being insert-molded onto the insulating layer and partially onto the inner casing; and an outer casing being insert-molded onto the inner casing and partially onto the stress releasing element. The cable connector assembly is produced without the pin, no pin holes will be formed on the outer casing. The cable connector assembly is easy to produce and aesthetically pleasing and can meet stricter requirement of the client.