The invention relates to the design of an aircraft cabin door mechanism, in particular to an idle stroke folding pedal mechanism. The idle stroke folding pedal mechanism comprises a pull rod, a springouter cylinder, a spring core rod, a spring, a spring end cover, a first joint and a supporting seat, wherein the spring outer cylinder is coaxially and fixedly arranged at the end part of one end ofthe pull rod, the spring core rod is coaxially arranged in an inner cavity of the spring outer cylinder from the opening end of the spring outer cylinder, moreover, an annular boss is arranged on theouter ring surface of the end part of one end of the spring core rod, the spring is coaxially arranged on the outer ring surface of the spring core rod in a sleeving mode, the spring end cover is fixedly arranged at the opening end of the spring outer cylinder, a through hole is formed in the center of the spring end cover and used for allowing the end part of one end, far away from the sealing end of the spring outer cylinder, of the spring core rod to penetrate through, the first joint is fixedly arranged at the end part of one end, far away from the sealing end of the spring outer cylinder, of the spring core rod, and the supporting seat is fixedly arranged at the end part of one end, far away from the spring outer cylinder, of the pull rod. The idle stroke folding pedal mechanism is compact in design and ingenious in arrangement, the function requirements of the sequential order action of the cabin door mechanism can be met without occupying redundant space, and then the control of the sequential order action of the cabin door mechanism is achieved.