Propolis is a resin collected by bees from plant spores or tree trunks, mixed with the secretions of the mandibular glands and beeswax, and processed into a gelatinous substance with an aromatic smell. Propolis is one of the main products of the hive. It is used to protect honey, pollen, royal jelly and other honeycomb bee products from deterioration and maintain the health of the entire bee colony. Because bees collect very little propolis, the annual production of propolis in the world is only 1/8 of gold production, so it is called Zijin. It has a good therapeutic effect on various oral diseases, can stop toothache, prevent periodontitis, dental caries, oral ulcers, tongue pain, bad breath and other oral diseases