Calcium supplementation during pregnancy can eat: a. Green leafy vegetables. Vegetables not only contain a large amount of potassium and magnesium, but also can help maintain the acid-base balance and reduce calcium loss, like chard, cabbage, celery, etc., are not negligible calcium supplement vegetables. Recent research has found that green leafy vegetables in vitamin K is the formation of osteocalcin elements, and osteocalcin is necessary for the deposition of calcium into the bones. Second, sesame seeds. Sesame is also a very good calcium food, calcium content is not inferior to cheese, and sesame itself has a hard shell, the digestibility of nutrients is also relatively low. But after grinding into sesame paste digestibility will be greatly improved, and sesame paste delicious, eat a spoonful of sesame paste, which contains calcium can reach about 200mg. Three, milk products. Half a pound of milk has 300mg of calcium, a variety of amino acids, lactic acid, minerals and vitamins, which can promote the digestion and absorption of calcium. So milk is the best calcium food, as the body’s most easily absorbed source of calcium milk, can be used as the main food for daily calcium supplement. Fourth, kelp and shrimp. Kelp and shrimp are also high calcium seafood, as long as you eat 25g a day, you can supplement calcium 300mg, and can also reduce blood lipids, prevent atherosclerosis. But shrimp skin contains trace amounts of amine nitrite carcinogens, should be eaten in moderation. Five, soybean products. Soybean products are also high protein, soybeans are also high in calcium.