Fuzhuan brick tea (FBT) is an indigenous dark tea fermented by fungal and bacterial communities, and the special favor of FBT attributes to the actions of microbiota, while the correlation between bacteria and fungi attracts little attention. In the present study, therefore, the compositions of microbial communities in 10 samples of FBT from four tea processing factories were evaluated by Illumina MiSeq sequencing. Bacterial taxonomy analysis revealed that the phylum Firmicutes and Proteobacteria were the predominant bacteria in all samples. Fungal taxonomy analysis revealed that the phylum As...