A novel machining method named controllable spar-inducing combustion and electrical discharge milling machining (EDM-Milling) is proposed. This machining method, in which the oxygen blows throughout the rotating tubular electrode intermittently, uses chemical energy of spark-inducing combustion to achieve material removal during the oxygen supply and utilizes traditional EDM to accomplish surface finishing when the oxygen is shut off. The influence factors of material removal rate and electrode relative wear rate are discussed, including polarity, discharge duration, discharge interval, peak current, pressure and the interval time of oxygen. The result shows that the workpiece should be connected to the anode, the electrode relative wear rate remains low, and the oxygen ventilation time should be prolonged to achieve high material removal rate in rough machining whereas the sparking discharging time should be increased to reach high surface quality and precision in finish machining.