Nucleic acid extractor

The utility model discloses a nucleic acid extraction instrument which comprises a rack, a reaction assembly, a pipetting assembly, a first driving assembly and a second driving assembly, the reaction assembly is connected to the rack, and the reaction assembly comprises a reagent strip; a nuclear extraction reaction tube for nucleic acid extraction reaction, a methylation reaction tube for methylation reaction and a plurality of reagent grooves for loading reagents are arranged on the reagent strip at intervals along a first direction, and the pipetting assembly is positioned above the reaction assembly and is used for puncturing, pipetting and uniformly mixing the reagent strip; the first driving assembly is used for driving the pipetting assembly to move in the vertical direction to be close to or away from the reaction assembly, and the second driving assembly is used for driving the reaction assembly or the first driving assembly to move in the first direction. According to the nucleic acid extractor dis