PROBLEM TO BE SOLVED: To provide an instrument holder which makes it easy to maintain a clean state of a hand picking an attachment member and facilitates hygiene management. An attachment member 50 capable of gripping a dental instrument includes a large-diameter portion (exemplified by a collar portion 51) that is pinched when attaching and detached from a holder member (exemplified by a vertical holder 31) and an instrument. It is formed in a funnel shape having a small diameter portion (exemplified by the storage cylinder portion 56) formed so as to be able to hold the ment. The holder member penetrates between the holder upper surface 32 on which the instrument is arranged to project, the holder lower surface 36 from which the instrument hose is drawn out, the holder upper surface and the holder lower surface, and receives the small-diameter portion of the attachment member. And a through hole portion. Then, the holder member is arranged such that the large-diameter portion of the attachment member is located above the upper surface of the holder by a predetermined distance. [Selection diagram] Fig. 5【課題】アタッチメント部材を摘んだ手の清潔状態を保ちやすくなり、衛生管理が容易になるインスツルメントホルダーを提供する。【解決手段】歯科用のインスツルメントを把持可能なアタッチメント部材５０は、ホルダー部材（縦置きホルダー３１で例示）から着脱する際に摘まれる大径部分（カラー部５１で例示）と、インスツルメントを把持可能に形成された小径部分（収納筒部５６で例示）と、を有した漏斗状に形成される。ホルダー部材は、インスツルメントが突出して配置されるホルダー上面３２と、インスツルメントホースが引き出されるホルダー下面３６と、ホルダー上面とホルダー下面との間を貫通し、アタッチメント部材の小径部分を受容する貫通孔部と、を有する。そして、ホルダー部材は、アタッチメント部材の大径部分をホルダー上面に対して上方に所定距離だけ離して配置させる。【選択図】図５
