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为研究正常国人小肠腔菌群及膜菌群的分布，经小肠镜及结肠镜检或手术时从正常国人空肠及回肠中取材，共检测了３０例的腔菌群及膜菌群。对其中１０种有代表性的需氧和厌氧菌进行了定性及定量分析。其结果显示：空肠梭菌、回肠乳杆菌及双歧杆菌的腔菌群与膜菌群有显著差异。３０例空肠内容及粘膜组织中均未培养出肠球菌，大肠杆菌在空肠的腔菌群及膜菌群中分别为５３．３％（１６／３０）和３３．３％（１０／３０），类杆菌有４０．０％（１２／３０）和３３．３％（１０／３０）生长。通过本研究，建立了我国正常人空肠和回肠腔菌群和膜菌群的研究分析方法。
In order to study the distribution of intestinal microflora and membrane flora in the normal people, 30 cases of bacterial flora and membrane flora were detected in the jejunum and ileum of the Chinese by enteroscopy and colonoscopy. Ten types of representative aerobic and anaerobic bacteria were qualitatively and quantitatively analyzed. The results showed that: Cavity Clostridium, Lactobacillus and Bifidobacterium cavity flora and membrane flora were significantly different. Enterococcus was not cultured in 30 jejunum contents and mucosal tissues. Escherichia coli was found in 53.3% (16/30) and 33.3% (10/30) of the jejunal flora and membrane flora, respectively. Bacteroides had 40.0% (12/30) and 33.3% (10/30) growth. Through this study, we established a method for the research and analysis of the normal and jejunal and ileal flora and membrane flora in our country.