The results showed that bacterial community of Tibetan kefir grains was more complex than that of yeast. The bacteria communities between different Tibetan kefir grains showed 78%~ 84% similarity, and yeast 80%~ 92%. 结果表明,藏灵菇中细菌的种群结构较酵母菌的复杂,不同来源的藏灵菇中细菌种群结构的相似性为78%~84%,酵母菌种群结构的相似性为80%~92%。