Abstract: The drought resistance evaluation of 6 brome at seed germination stage was studied by simulated drought stress with different concentrations of PEG-6000 solution.The results showed that seeds, germination percentage , germination tendency , radicle length , germ length, germination index was no changed or not significant declined at4 %, 8% of PEG compared to the control;But over 12%PEG , the radicle length , germ length, germination index, germination tendency was declined significantly. the comprehensive evaluation on drought resistance was given based on membership function method indicated that the drought resistance of the 6 species decreased in order of AI〉AS〉A6〉A3〉A2〉A4.