This kit is suitable for the rapid extraction of high-purity viral DNA/RNA from various samples such as blood, serum, plasma, swab, tissue, bronchoalveolar lavage fluid, and cell culture supernatant. Due to the unique lysis system, the kit does not require high temperature incubation, and the addition of Carrier RNA can significantly improve the extraction efficiency of trace nucleic acids. The viral DNA/RNA can be purified quickly and efficiently by specific adsorption of silica membrane. The kit has a wide range of sample compatibility, and the obtained nucleic acid has a high purity and high yield. That nucleic acid can be directly used in downstream related experimentssuch as reverse transcription, PCR, fluorescence quantitative PCR, next-generation sequencing and Northern hybridization, etc.