[Objective] The aim was to develop a fast and effective DNA extraction method of intestinal microflora, a modified method of chloroform extraction, and to provide the basis for quantitative and qualitative detection. [Method] Through the improvement of conventional DNA extraction method, a rapid and efficient DNA extraction method was developed. Compared with the real-time PCR result of control sample and the result of QIAamp DNA Stool Mini kit, the developed method was verified. [Result] The DNA yield of the developed method was 100 times as much as that of QIAamp DNA Stool Mini kit. And the real-time PCR result showed that the efficiency of DNA extraction of the developed method was higher than that of the QIAamp DNA Stool Mini kit. [Conclusion] This modified method is inexpensive, efficient and rapid, and it is suitable for large quantities of feces samples.
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