A cable connector assembly for being mated with a mating connector along a mating direction, includes: a mating member, a cable electrically connected with the mating member, and a shielding shell having an end mounted on the mating member, and an opposite end mounted on the cable, the shielding shell including a first shell and a second shell mated with the first shell along a transverse direction perpendicular to the mating direction, wherein each of the first shell and the second shell has an asymmetrical structure.