This invention is a cable terminal connector, primarily comprising of a U-shaped contact body at the front end of the connector, with a compressible slot located between its upper and lower faces, forming upper and lower resilient clamping faces above and below the compressible slot. When the cable terminal connector's U-shaped contact body is held in place by the cap, the resilient clamping faces on the U-shaped contact body spring back to hold the cap in place, preventing it loosening and increasing the stability of conduction, thereby making it a more effective cable terminal connector.