PROBLEM TO BE SOLVED: To provide a pharmaceutical for treating deterioration of cartilage.SOLUTION: The pharmaceutical includes an extract from Biota orientalis as an active ingredient for treating the deterioration of cartilage including stimulating growth or recovery of cartilage through stimulation of proliferation of cartilage cells.【課題】軟骨の劣化の治療のための医薬の提供。【解決手段】軟骨細胞の増殖の刺激を介して軟骨の成長又は修復を刺激することを含む軟骨の劣化の治療のための、Biota orientalisからの抽出物を有効成分として含む医薬。【選択図】なし