The product is used for extracting and purifying nucleic acid from biological samples. Automatic extraction and purification of nucleic acid can be automatically realized through the mixing of solution and the recovery, transfer, and release of magnetic beads. With automatic temperature rise and drop, it can extract 1 – 32 samples simultaneously to realize efficient, rapid, and automatic extraction of nucleic acid. It is compatible with the test kits made by all reagent manufacturers, so users can extract and purify nucleic acid from blood, plasma, saliva, oral swabs, viruses, flora and fauna tissues, bacteria, and microorganism samples.