Nucleic acid extraction assembly

The nucleic acid extraction assembly comprises a nucleic acid extraction instrument body, an extraction operation bin is fixedly connected to the lower surface of the nucleic acid extraction instrument body, a bottom plate is arranged on the inner bottom wall of the extraction operation bin, a fixing table is fixedly connected to the upper surface of the bottom plate, and a deep hole plate is arranged on the upper surface of the fixing table. Sliding grooves are formed in the inner walls of the two sides of the extraction operation bin, locking containing grooves are formed in the inner top walls of the sliding grooves, and locking pieces are rotationally connected to the inner walls of the two sides of the extraction operation bin. According to the utility model, the clamping force of the clamping plates on the deep-hole plate is adjusted through the threaded adjusting rods to fix the deep-hole plate, so that the deep-hole plate cannot deviate in the extraction and stirring process, and the sample nucleic ac