AUTO double head double side milling machine is a high-efficient milling equipment especially designed for meeting the requirement of double side beveling of welding plate, which is used in petroleum, petrochemical, chemical, nuclear power, boiler pressure and shipbuilding industries etc. Its machining principle completely eliminate the bad effect caused by machining hardening and machining thermal effect, suitable for machining special alloy steel plate, such as stainless steel, cold plate etc. and this equipment is equipped with imported big-power driving high-speed milling head. And its efficiency improved nearly 10 times compared with traditional milling machine.