Excrement DNA extraction kit and excrement DNA extraction method

The invention provides an excrement DNA extraction kit and an excrement DNA extraction method, and relates to the technical field of in-vitro diagnosis. The excrement DNA extraction kit comprises a sample treatment solution and a nucleic acid extraction solution, the sample treatment solution comprises a protease K solution, a first sample treatment solution, a second sample treatment solution and a third sample treatment solution, a sample is treated step by step, impurities of the sample can be further removed, nucleic acid extracted from the sample is purified, and the detection accuracy is improved. Therefore, high-quality nucleic acid is obtained from the excrement sample. The kit is simple and easily available in composition and small in toxic and side effects; operation is easy, storage and transportation are easy, and time and labor are saved; the extracted nucleic acid is higher in purity and stronger in specificity; excrement nucleic acid can be extracted by matching with an automatic nucleic acid e