Dry Type Fume Extraction plasma cutting machine mainly adopts one ventilation outtake and one gliding extraction intake, the extraction intake moves as the gantry goes, the sealed rubber strip at the head of ventilation outtake, can make itself adhere to ventilation outtake and makes a sealing function with the help of minus pressure generated by the fan. The main advantage of this kind of dust cleaning is that there is no necessary to put the extraction device on the top of gantry, it greatly reduces load of gantry, and also avoid negative effect to cutting quality that caused by shaking of fan. This kind of fume extraction is the most ideal dust cleaning method for plasma cutting up to now in both cleaning effect and cutting quality.