There are many people who detect nucleic acids. Nucleic acid is a general term for deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is a biomacromolecule compound polymerized from many nucleotide monomers, and it is one of the most basic substances in life. The second inspection in the restaurant for seven days failed because there were many people testing nucleic acid. Nucleic acid is a biopolymer, the basic component of all known life forms, the most important substance of all biomolecules, and widely exists in all animal and plant cells and microorganisms.