Using 16 aerobic rice cultivars as materials the relation of yield and main yield components traits were studied by randomized block design.The results showed that ‘Chunfeng A006’ has significantly higher yield than ‘Han9710’ （CK）.Plant Height,1000-grain weight,valid tiller,ripen grain number played important role in yield.The reason for high yield resulted from high biomass.Increasing the ripen grain number and 1000-grain weight on the basis of feasible spike number may further improve rice yield.