The scientific name of PQQ is pyrroloquinoline quinone, which is a new cofactor that has been shown to be useful in the treatment of heart disease, neurological disorders, protection of the liver, and maintenance of mitochondrial function. Pyrroloquinoline quinone is widely found in prokaryotes, plants and mammals, it is not only a cofactor for many enzymes, which is responsible for transferring electrons, protons and chemical groups in enzymatic reactions, but also stimulates the growth of microorganisms, the germination of plant pollen, and promotes the growth of plants.