The variational regularity of fungi community in fermentation process of fermented grains of luzhou-flavor liquor were analyzed by PCR-DGGE technique in the test.The results showed that 9～19 clear bands were shown clearly in these grains samples,wherein No.2,5,8,9,14,17 bands were significantly detected in all samples.The diversity index of these samples ranged from 1.68 to 2.61.At the early stage of fermentation,the diversity index of samples generally decreased at first and then followed by increasing.The diversity index was stable from Day 21 to Day 49 and reached the lowest value on Day 56.It increased at Day 63 and then decreased.It slightly rose on Day 84.The similarity indexes of PCR-DGGE patterns of samples from different stages were low,which indicated that the fungi community of Fermented Grains at different fermentation stage had some difference.