The invention relates to a kit for auxiliary diagnosis of
multiple tumors by taking a micro ribonucleic acid (
RNA) combination as a
tumor marker, and a detection method of the kit. The invention belongs to the fields of
genetic engineering and
oncology. The detection method comprises the steps of (1) extracting
RNA from serum; (2) carrying out
polyadenylation on the 3' end of micro
RNA; (3) purifying and recovering a tailing product; (4) carrying out an inverse transcription reaction on the tailing product; (5) testing the relative expression of the micro RNA by means of a fluorescent quantitative PCR (
polymerase chain reaction); (6) analyzing the result of the fluorescent quantitative PCR. The kit has the characteristics of high conservative property, space-time specificity, stability,
tissue specificity and the like, and plays an important role in the aspects such as
disease pathogenesis research, early diagnosis,
individualized treatment and prognosis; furthermore, the kit is simple to operate, convenient in material obtaining, safe and noninvasive, and is conveniently used for screening of a great deal of diseases.