The invention relates to a cable connector component. The cable connector component comprises an electric connector and a cable connected with the electric connector, the electric connector comprisesa butt joint matched with a butting connector, a circuit board connected with the butt joint and the cable, and a metal housing arranged at the outer side of the circuit board, the cable comprises a plurality of core wires and a shielding layer arranged at the outer sides of the core wires, the metal housing is electrically connected with the shielding layer, the circuit board is provided with lugs, the lugs are provided with grounding portions, and the metal housing is electrically connected with the grounding portions on the lugs to achieve grounding. The cable connector component is configured to connect the shielding layer of the cable and the metal housing through the circuit board to reduce the resistance of a power supply loop so as to reduce the heating and transmit the larger current.