The invention relates to a cable connector assembly, which comprises an insulating main body, a terminal, a circuit board, a cable and an insulating shell. The terminal is arranged in the insulating main body, the circuit board is electrically connected with the terminal, the cable is connected with the back end of the circuit board, and the circuit board is provided with an electronic element. The cable connector assembly further comprises an insulating inner shell arranged on the circuit board and used for protecting the electronic element, and the electronic element is contained in the insulating inner shell. The insulating inner shell can prevent the electronic element on the circuit board from being broken.