PROBLEM TO BE SOLVED: To provide a stretcher carrying assistant device which enables suitably carrying a stretcher down a stair by a small number of people, while reducing inclination of the stretcher even with a high step in the stair.SOLUTION: A stretcher carrying assistant device 1 includes: a body 10 detachably attached to one end 110a of a pair of parallel support bars 110 and a brake controller 20 detachably attached to the other end 110b. The body 10 includes: an installation portion 11 attached to the pair of support bars 110 a leg portion 12 which is rotatably arranged on the installation portion 11 and has a wheel 12c having a brake 12d connected to the brake controller 20 and positioning means 13 for rotating and positioning the leg portion 12 between a first position to which a position of the supported stretcher 100 is lowered and a second position to which a position of the supported stretcher 100 is raised. When descending the stair, a height difference L1 to suitably follow the difference of the steps of the stair by positioning the leg portion 12 to the first position.COPYRIGHT: (C)2015,JPO&INPIT【課題】担架を少人数の運搬者によって階段で下ろすことに対応させることができ、階段の落差があっても担架の傾きを抑えることができる担架運搬補助装置を提供すること。【解決手段】担架運搬補助装置1は、一対の平行な支持棒110の一端部110aに着脱自在に装着される本体部10と、他端部110bに着脱自在に装着されるブレーキ制御部20と、から構成される。本体部10は、支持棒110に装着される装着部11と、装着部11に回動自在に配設され、ブレーキ制御部20に接続されるブレーキ12dを有する車輪12cを備えた脚部12と、支持する担架100の位置が低くなる第一の位置と、支持する担架100の高さが高くなる第二の位置とに、脚部12を回動させて位置付ける位置付け手段13と、を備え、階段を下りる時は、脚部12を第一の位置に位置付けることで階段の落差に対応する高低差L1を形成する。【選択図】図2