Oysters are a foodstuff with no so-called efficacy or effect, but they have a high nutritional value. The meat of oysters can be eaten and oyster sauce can be made. Every 100g oyster contains about 57 calories, its protein content can reach 10.5g/100g, its fat content of 1.5g/100g, is a high protein, low fat, low sugar food, and low calorie. Oysters contain essential amino acids, as well as taurine, glutathione, vitamin A, vitamin D, vitamin E, vitamin B1, vitamin B2, and copper, zinc, manganese, phosphorus, calcium, magnesium and other substances. Oysters contain phosphorus and calcium, which can be supplemented with calcium and phosphorus when consumed in moderation, and the absorption rate of calcium is highest when the ratio of calcium to phosphorus is 1:1-1:5. Oysters also have a high content of zinc and are also rich in taurine, DHA and other nutrients. Oysters are contraindicated for those who are allergic to seafood. Oysters contain high levels of uric acid, which can form uric acid crystals in the joints after absorption, aggravating arthritis symptoms. Oysters are food and should be taken in moderation. It should be noted that oysters do not belong to the drug, which contains nutrients generally can not reach the standard of medicinal use, if you need treatment, must seek medical guidance.