Device for reducing DNA extraction error rate

The utility model discloses a device for reducing DNA (deoxyribonucleic acid) extraction error rate, which comprises a rectangular deep hole plate, a first deep hole group and a second deep hole group are uniformly distributed on the deep hole plate, the first deep hole group is positioned at the rear end of the second deep hole group, a first mark is transversely arranged on the deep hole plate at the rear end of the first deep hole group, and a second mark is transversely arranged on the deep hole plate at the rear end of the second deep hole group. A first deep hole group is transversely arranged on the deep hole plate, a second mark is vertically arranged on the deep hole plate at the right end of the first deep hole group, a first mark is transversely arranged on the deep hole plate between the first deep hole group and the second deep hole group, a third mark is vertically arranged on the deep hole plate at the right end of the second deep hole group, and each of the first deep hole group and the second