A pedal device for barrier-free wheelchair, comprising two operation bar, each of which’s upper section pivotally connected to side frame of wheelchair and the lower section connected to a pedal. And two guide rail, each of which disposed on said side frame, comprising a curved sliding grooveand a plurality of positioning holes which being disposed in spaced on said curved sliding groove. Two slide bar, each of which mounted slidably on said guide rail and having a first bar portion throughout the middle of said operation bar. The operation bar is limited at a fixed position when the first bar portion engaged with said positioning holes, and moved forward and backward when the first bar portion disengaged with said positioning hole. So as to move said pedal between a storage position which is below a cushion and a position for displacement of user’s feet.一種無障礙之輪椅腳踏裝置,包含二操作桿,各該操作桿上段樞接於輪椅的側架上,其下段連結有一腳踏板;二導移座,各該導移座設於該側架上,並包含一弧形滑道及數間隔設於該弧形滑道的定位孔;以及二滑桿,各該滑桿是可滑移地安裝在該導移座上,並具有一貫穿操作桿中段的第一桿部;當該第一桿部位於該定位孔時,該操作桿被限位在一固定位置,當該第一桿部離開該定位孔時,該操作桿得以前後運動,並使該腳踏板得以在該坐墊下方之ㄧ收納位置與供腳踏使用之一腳踏位置間移動。1‧‧‧輪椅11‧‧‧側架12‧‧‧坐墊2‧‧‧操作桿21‧‧‧上段22‧‧‧下段23‧‧‧中段24‧‧‧腳踏板241‧‧‧復位單元3‧‧‧導移座4‧‧‧滑桿