Abstract: In a pilot scale reverse flow reactor with a liter of catalyst, catalytic combustion of typical industrial waste gas contaminated with volatile aromatic compounds (VOC) was systematically investigated, and the “temperature run-away”in the case of too high feed concentration and the “extinction of reactor” in the case of low feed concentration were observed. More attention was paid to determining the range of feed concentration in which through adjusting operation parameters,such as the periodic time,the reactor could achieve a high conversion of VOCs and meanwhile maintain a stable ignited state,i.e neither “temperature run-away” nor “extinction”.