The invention belongs to the field of special machining, and relates to an aerial high-efficiency spark milling machining method. According to the aerial high-efficiency spark milling machining method disclosed by the invention, a peak current and a pulse width of energy input between machining intervals are substantially increased, so that enough workpiece materials are fused; then through high-speed air flow and high-speed electrode rotation, effective discharge of machining scraps and sufficient cooling of tool electrodes are guaranteed. Through the adoption of the method disclosed by the invention, when materials of stainless steel, titanium alloy and the like are machined, the machining efficiency achieves 5000mm<3>/min or above, so that the spark machining efficiency achieves mechanical machining level for the first time. The economic, environmentally-friendly and rapid machining of large-scale cavities, complex parts and the like, which are made from high-intensity high-hardness conductive materials can be realized.