Abstract: The characteristics of pulverized coal combustion, CO₂ enrichment and NO_x generation during the oxygen-enriched combustion were analyzed. The synergistic control of CO₂ enrichment and NO_x generation was simulated. Results show that compared with air combustion, the negative synergistic effect between CO₂ enrichment and NO_x volume fraction distribution during the oxygen-enriched combustion can be observed. Under different O₂/CO₂ volume fractions, as the oxygen volume fraction increases, the volume fractions of both CO₂ and NO_x at the furnace outlet increase to the maximum firstly and then decrease slightly, showing the positive synergistic effect, but the turning point of the oxygen volume fraction is different. When enriched CO₂ volume fraction exceeds a certain value, it can effectively inhibit the NO_x generation. Under enriched oxygen conditions, a synergistic control technology can be achieved for high CO₂ enrichment and low NO_x generation at the furnace outlet.