PROBLEM TO BE SOLVED: To provide a medical care long body insertion aid and a medical care long body set, capable of reducing risk of infection disease by a sheath covering a medical care long body, and in which a sanitary state of the sheath is hardly damaged.SOLUTION: A medical care long body insertion aid 100 comprises: a main body part 110 on which an insertion hole 111 into which a medical care long body 190 can be inserted, is formed a sheath 160 at least part of it is stored in the main body part, and covering the medical care long body following to insertion of the medical care long body into the insertion hole, and projecting from the insertion hole and a support part 120 disposed on the main body part, and supporting the projecting sheath so as not to fall from the insertion hole.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】医療用長尺体を覆うシースによって感染症のリスクを低減させ、かつシースの衛生状態が損なわれ難い医療用長尺体挿入補助具および医療用長尺体セットを提供する。【解決手段】医療用長尺体挿入補助具100は、医療用長尺体190を挿通可能な挿通孔111が形成された本体部110と、本体部の内部に少なくとも一部が収容され、挿通孔への医療用長尺体の挿入にともなって医療用長尺体を覆いつつ挿通孔から突出するシース160と、本体部に設けられ、突出するシースを挿通孔から抜けないように支持する支持部120と、を有する。【選択図】図4