The atmosphere with high oxygen content in gas-based sintering is essentially different from the locally reducing atmosphere in conventional sintering. Fundamental sintering characteristics reflect the sintering behavior of iron ore fines, however,thecurrentexperimentsare conductedunderairatmosphere,the effectof oxygencontentinactualsintering processineglcdhsdyinvestgatesteecofoxygencnttonassmilinpomanceluidphaslii bondingphasestength,andcalumfeieformationcharacerisicsbyinjectinggaseswhdifferentoxygencontntintoa fundamental sintering characteristics furnace. The results show that with the oxygen content in the atmosphere increases,the assimilation temperature of ironorefinesdecreases,whiletheliquid phase fluidity,bondingphasestrength,and calcium ferrite formation amount all increase.