PROBLEM TO BE SOLVED: Calcium carbonate, a calcium carbonate preparation for food addition, and calcium carbonate capable of imparting good elasticity when added to food products such as beverages, which does not easily sediment and has excellent dispersibility, and added to a fish paste product. Provide food. SOLUTION: The BET specific surface area is in the range of 20 to 45 m2/g, and the void volume of 0.1 μm or less in the void diameter distribution curve (0.01 to 10 μm) by the mercury intrusion method is the void volume of the entire void volume. It is characterized by being 30% or more. [Selection diagram] None【課題】飲料等の食品に添加した場合に、沈降しにくく、分散性に優れ、水産練り製品に添加した場合に、良好な弾力性を付与することができる炭酸カルシウム、食品添加用炭酸カルシウム製剤及び食品を提供する。【解決手段】BET比表面積が20~45m2/gの範囲内であり、水銀圧入法による空隙径分布曲線(0.01~10μm)における空隙径0.1μm以下の空隙容積が全体の空隙容積の30%以上であることを特徴としている。【選択図】なし