[PROBLEMS] To provide (1) excellent adhesion or bonding of cells or tissues to a material surface, (2) oriented tissue is regenerated and reconstructed, (3) excellent in mechanical strength, and (4) tissue replacement material. In the case of being used as a medical honeycomb structure, it can be quickly replaced with a desired tissue and (5) can meet the demands for medical materials that can be manufactured at low cost. A medical honeycomb structure having a plurality of through-holes extending in one direction, a through-hole groove formed on the outer peripheral side portion of the through-hole groove, and the through-holes being formed. A medical honeycomb structure including a through-hole inlet adjacent to a groove. [Selection] Figure 7【課題】（１）細胞あるいは組織の材料表面への接着性あるいは結合性に優れ、（２）配向した組織が再生・再建され、（３）機械的強さに優れ、（４）組織置換材料として用いられる場合においては、迅速に所望の組織に置換され、（５）安価に製造できる、という医療用材料に望まれる要求を満足する医療用ハニカム構造体を提供すること。【解決手段】一方向に延びる複数の貫通孔を備えた医療用ハニカム構造体であって、その外周側部に、前記貫通孔の側壁が欠損して形成された貫通孔溝と、該貫通孔溝に隣接する貫通孔入口とを備えている医療用ハニカム構造体である。【選択図】図７
