The 10 kinds of fruits with high calcium content include fig, navel orange, calcium fruit, grapefruit, lemon, date palm, kumquat, fairy fruit, mulberry and kiwi fruit. Calcium, whose original meaning is a metallic element, is silvery white and has active chemical properties. Calcium is an important constituent element of organisms, with atomic number 20 and symbol Ca, which is located in the 4th cycle and IIA group in the periodic table. Calcium is a silvery white solid at room temperature, and its chemical properties are active, so it exists in the form of ions or compounds in nature.