Double-Block Anti-Taq DNA Polymerase Antibody is a mixture of two monoclonal antibodies that can inhibit the activity of 5 '- 3' polymerase and 5 '- 3' exonuclease of Taq DNA Polymerase, respectively. The antibody can effectively inhibit the nonspecific annealing of primers and the nonspecific amplification. In addition, the product can effectively prevent probe degradation. Double-Block anti-Taq DNA Polymerase Antibody is denatured in the initial DNA denaturation step of PCR reaction, through which DNA polymerase activity is restored to achieve the effect of hot start PCR. It can be used under the condition of routine PCR reaction without special inactivation of antibodies.