Oyster contains 80% ~ 95% calcium carbonate, calcium phosphate and calcium sulfate, and also contains magnesium, aluminum, silicon and iron oxide. After calcination, the carbonate of oyster decomposes to produce calcium oxide. Protozoa oyster contains glycogen, taurine, 10 essential amino acids, glutathione, vitamin A and B 1. B2 D, and inorganic substances such as copper, zinc, manganese, barium, phosphorus and calcium, among which leucine, arginine and citrulline are the most abundant, which is one of the highest marine species discovered by human beings so far. Guangdong in China and Taiwan Province in Fujian have more aquaculture. The meat is delicious, rich in protein, fat and liver sugar, and can be eaten raw or cooked. It can also be processed into oyster sauce or oyster sauce. The shell can be used as medicine or burned with lime. Oysters are rich in protein, zinc, omega-3 fatty acids and tyrosine, and low in cholesterol. Among them, the zinc content is extremely high, which helps to improve male sexual function. Note: The zinc content of six oysters is twice the daily requirement. If oysters are not fresh, it is easy to cause food poisoning.