The kit is intended for rapidly extracting viral RNA/DNA from serum and other liquid samples. Realizes the high-throughput processing of parallel samples. The whole operation process is safe, convenient and no need for organic reagent. The extracted nucleic acids are highly purified and in quantity, can be widely used in the fields of diagnostics, genomics research, disease detection, food safety and forensic identification, etc. In certain conditions, the Magnetic Beads bind the negatively charged nucleic acid. The Magnetic Beads that have been bound nucleic acids are magnetized, transferred and released via the specialized magnetic rods during the process of nucleic acid extraction, which accomplish automated extraction.