Abstract: [Objectvie and Method]The effects of some fungicides and their mixtures on tomato grey mould (Botrytis cinerea Pers) were tested with the hypha growth rate and spores germination methods in vitro in laboratory. [Result]Results showed that hypha growth, Armure, Thiram,Shihuile and Iprodione had significant inhibition activity,their EC_(50) s were between 0.347 6 μg/mL and 0.724 2 μg/mL. Vinclozolin and Diethofencarb with EC_(50)s＞1 μg/mL were less effective.But the spores germination, Armure, Thiramand and Iprodione had good inhibitory actions. Their EC_(50)s were between 1.308 5 μg/mL and 1.336 4 μg/mL. Vinclozolin and Shihuile had less effects(with EC_(50) of 1.525 4 μg/mL and 1.777 4 μg/mL).Diethofencarb,with EC_(50) of 1.525 4 μg/mL and 1.777 4 μg/mL,took second place.[Conclusion]Synergistic inhibition were obtained when Iprodione and Thiram were mixed.