Taishan oyster is used as medicine. In Taishan oyster culture, a small amount of hormones or other drugs are used. If oysters are allowed to grow normally, it will take 15- 18 months to harvest even if the conditions are good and the nutrition is rich. Oyster is another name of oyster, which belongs to a kind of bivalve clam in mollusca, also known as oyster yellow, oyster white, oyster seed, oyster green, oyster, oyster clam and oyster clam. Oyster meat is tender, with outstanding umami flavor, fishy smell and unique taste.