PROBLEM TO BE SOLVED: To provide a release lever misoperation prevention structure capable of preventing a release lever of a retractor body connected to a floor surface of a vehicle from being unintentionally pressed down by a press-down force applying body such as shoes or baggage of a passenger.SOLUTION: The release lever misoperation prevention structure is fitted to a retractor 20 that includes a winding core for winding, from the other end side, a belt 10 to one end of which an engagement member 11 engaging with a wheel chair is fitted, a retractor body 22 which houses the winding core, for delivery of the belt 10 from an opening part on a front surface, a rotation regulating mechanism which regulates rotation of the winding core toward a belt delivery direction, and a release lever 24 which protrudes from a surface other than the front surface of the retractor body 22, for releasing rotation regulation of the winding core when pressed down, for preventing a misoperation of the release lever 24. It includes a press-down prevention member 50 that is attached to the retractor body 22 or the release lever 24, to prevent the release lever 24 from being pressed down by a press-down force applying body which approaches the release lever 24 from above.SELECTED DRAWING: Figure 1【課題】乗り物の床面に連結されたリトラクタ本体の解除レバーが乗客の靴や荷物等の押下力付与体によって意図せず押下げられることを防止できる解除レバー誤操作防止構造を提供する。【解決手段】この解除レバー誤操作防止構造は、車椅子に係合する係合部材11が一端に取付けられたベルト10をその他端側から巻取る巻芯と、巻芯を収容し、前面の開口部から前記ベルト10が巻出されるリトラクタ本体22と、巻芯のベルト巻出方向への回転を規制する回転規制機構と、リトラクタ本体22の前記前面以外の面から突出し、押下げられると巻芯の回転規制を解除する解除レバー24とを備えたリトラクタ20に取付けられ、解除レバー24の誤操作を防止するものであって、リトラクタ本体22又は解除レバー24に取付けられ、解除レバー24に上方から接近する押下力付与体により解除レバー24が押下げられることを防止する押下防止部材50を有する。【選択図】図1