PROBLEM TO BE SOLVED: To provide a curable composition which is suitable as a material to repair a living tissue such as a hard tissue (e.g., bone and tooth) and a soft tissue in the circumference of the hard tissue, etc., and is usable in surgery, dentistry, etc.SOLUTION: The curable composition for repairing a living tissue is the curable composition which contains calcium salt and where a cured body to be obtained by curing the curable composition for twelve hours at 37°C has a projecting/recessing surface structure in which the Ra value is equal to or more than 3.6 &mum and the Sm value is equal to or more than 30.0 &mum in surface roughness.COPYRIGHT: (C)2012,JPO&INPIT【課題】硬組織(例:骨、歯牙)および硬組織周辺の軟組織などの生体組織を修復するための材料として好適で、外科および歯科などで使用可能な硬化性組成物を提供する。【解決手段】カルシウム塩を含有する硬化性組成物であり、前記硬化性組成物を37℃で12時間硬化して得られる硬化体が、表面粗さがRa値3.6μm以上かつSm値30.0μm以上となる表面凹凸構造を有する、生体組織修復用の硬化性組成物。【選択図】なし