The invention relates to a spinal transarticular screw connector. The connector is provided with a fixed bar fixing end, a screw fixing end and a connecting rod connecting the fixed bar fixing end with the screw fixing end, a fixed bar fixing end body is arranged at the fixed bar fixing end, the fixed bar fixing end body is provided with a plug screw fixing hole and a fixing groove, and the head end of the plug screw fixing hole is communicated with the fixing groove; the screw fixing end is provided with a screw fixing end body which is provided with a ball socket, the ball socket is internally provided with a C-shaped opening spherical ring matched with the ball socket, and a taper thread is arranged on the inner wall of the opening spherical ring. The spinal transarticular screw connector can make connection between a transarticular screw and a pedicle screw rod, the strength of internal fixation is increased, better flexion-extension, lateral bending and torsion resistant effects are obtained, the transarticular screw can be implanted according to a correct screw trajectory more conveniently, surgical operation is more convenient, and the connector has the advantages of being minimally invasive, small in damage and low in cost, and conforms to the minimally invasive trend and principles of health economics.