Abstract: The experiments were carried out on the pulsed power generator Light Ⅱ-B （250 kA/50 ns）. The wire load X-pinch was installed on the cathode and anode of the device and the current-return rod. Light Ⅱ-B was used to drive the wire load X-pinch. A series of backlighting images could be clearly seen at different moments during wire load X-pinch discharge. The implosion and explosion of plasma near the cross point of the wire load X-pinch can be seen. The study can provide a better understanding about plasma physics formation of wire load X-pinch.