The aim of this study was to investigate the composition and function of microorganisms during the production of high-temperature Daqu, high-temperature stacking process, and in-pit fermentation with genomic DNA extraction at different periods. The microbial diversity of each fermentation period was analyzed using high-throughput sequencing. Results show that the quantity and distribution of the microbial flora in the diverse environment of high-temperature Daqu, stacking fermentation, and bacterial community are identical. The differences in the ecological environment between high-temperature...