Drum cutter can be installed on any type of hydraulic excavator, efficient alternative to scoop, hammer, hydraulic shear, such as general configuration, used in open-pit coal mine, tunnel excavation and the contour correction, channel groove milling digging, asphalt concrete pavement milling planer, frozen rock digging, roots milling and milling, and other fields, and milling drivers for the construction of the tunnel excavation provides a new method