This product uses medical-specific polyurethane sponge as raw material, which has the advantages of good liquid absorption, softness and cleanliness. The swab brush of the sampling swab can be broken off for easy use. The materials used are non-toxic to microorganisms, can greatly increase the collection and release of samples, and enhance the preservation effect of samples during delivery. It can preserve oral swab DNA at room temperature for up to 12 months, and the DNA extracted can be used for downstream gene detection and analysis experiments, such as qPCR, NGS, and SNP analysis. Provide convenience and reduce costs for transportation and storage.