A cable connector assembly (100) in accordance with the present invention comprises an insulative housing (1) and a plurality of contacts (2) received therein, a cable (5) connected with the contacts (2), a strain relief portion molded on the cable (5), the strain relief portion having a extruding portion (52) on a front end thereof and a retaining portion (51) behind the extruding portion (52), the retaining portion (51) also having a pair of locking blocks (53) at opposite sides thereof, and a cover (8) enclosing the aforementioned components, a back surface of the cover (8) defining a pair of gaps (826) at opposite sides thereof and connected with the correspondence locking block (53) in order to make the strain relief portion and the cover (8) assemble together.