n this experiment, as tested grape fungus Botrytis cinerea, to fennel, dried tangerine peel, star anise as the experimental materials to study three kinds of spices on the inhibition of gray mold. The experiment carried out by Soxhlet extraction extractor, filter paper method of using three varieties of different concentrations of the extract on the growth inhibition of Botrytis cinerea, and PDA liquid medium with a minimum inhibitory concentration determination, to explore the best The effect of species and the optimal concentration. Experiments show that the three extracts at different concentrations of Botrytis cinerea were inhibited by their strong inhibition of spore. The results of the minimum inhibitory concentration can be found, white garlic extract on the minimum inhibitory concentration of Botrytis cinerea was 45mg/ml, Purple garlic extract on cinerea minimum inhibitory concentration of 120mg/ml, two red garlic extracts on Botrytis cinerea minimum inhibitory concentration of 270mg/ml.　　Key words: Botrytis cinerea; extract; inhibitory effect。