PROBLEM TO BE SOLVED: To provide a novel medical biological absorbent member which is completely disappeared by dissolution and absorbance of a coating and a substrate in organism and a manufacturing method therefor.SOLUTION: There is provided a medical biological absorbent member in which a surface of a substrate consisting of magnesium or a magnesium alloy is covered with a corrosion resistant coating adjusting dissolution time in organism, and the coating is a biological absorbent coating mainly containing an apatite carbonate crystal.SELECTED DRAWING: Figure 1【課題】被膜も基材も生体内で溶解・吸収されて完全に消失する新規な医療用生体吸収性部材およびその製造方法を提供すること。【解決手段】生体内での溶解時期を調整する耐食性被膜にてマグネシウム又はマグネシウム合金からなる基材の表面が覆われてなる医療用生体吸収性部材であって、前記耐食性被膜が炭酸アパタイト結晶を主成分とする生体吸収性の被膜であることを特徴とする医療用生体吸収性部材。【選択図】図1