The invention relates to a vehicle door lock, in particular to a self-attraction sliding door lock and belongs to the technical field of vehicle door locks. The self-attraction sliding door lock comprises a bottom plate, an unlocking deflector rod, an electric opening rocker, a switch deflector rod, a toothed disc, a self-attraction deflector rod, a limiting rocker, a start drawing wire, a conversion drawing wire and a lock body, wherein a tooth disc rivet is riveted to the bottom plate and rotationally connected with the toothed disc; a switch connection rod rivet is riveted to the toothed disc and connected with the switch deflector rod, and the switch deflector rod is fixedly connected with a gear switch; a limiting rocker rivet shaft is riveted to the bottom plate and provided with a guide sleeve, the limiting rocker, the unlocking deflector rod and a connection plate in sequence from bottom to top; and the limiting rocker and the unlocking deflector rod are rotationally connectedto the limiting rocker rivet shaft. The self-attraction sliding door lock can achieve the self-attraction function and the electric opening function of the vehicle door locks, further has the vehicledoor emergency opening function and achieves structure integration, and the size of the lock body is reduced.