Rubber mixing mill machine for double roller machine, mainly open refining organic, frame, rollers, gears, lubrication device, heating, cooling device, roller is adjusting device, safety brake and motor, gear, etc. The roller adopts safe cold hard cast-iron, formed by the surface grinding smooth surface. Inside the hollow cylinder for use, can according to the requirement, the steam and cooling water are used to regulate the temperature of the rolls. Two rolls with different relative rotation speed, rubber roller into two slot by mechanical processing.