The invention relates to the field of aeronautic structural component machining, in particular to an environment-friendly cutting technology. The environment-friendly cutting technology comprises the steps of A, installing aeronautic structural components to be machined on a work table, locating the aeronautic structural components and establishing a coordinate system; B, arranging a milling cutter and arranging a plurality of jetting devices around the milling cutter with the coordinate system as the basis; C, carrying out milling and jetting oil-gas mixture mists towards the machining part from a plurality of directions for cooling and chip removing through the jetting devices, wherein oil in the oil-gas mixture mists is vegetable oil. The environment-friendly cutting technology is suitable for the aeronautic structural components and higher in environment friendliness, improves the cooling effect and reduces built-up edges.