The utility model discloses a passageway self -adaptation suspension, include support, left lifting unit, right lifting unit, channel assembly, entry subassembly and connect the ship subassembly, a left side lifting unit and right lifting unit include three overhead door frame respectively, and the overhead door frame all just can follow the support with the leg joint and reciprocate in perpendicular to horizontal plane direction, channel assembly includes three passageway, and a left overhead door frame and a right overhead door frame are connected respectively to every passageway, and entrysubassembly and connect relative being connected with left lifting unit and right lifting unit in ship subassembly position through changing the relative position that overhead door put up, can changevariable -channel's the slope, and the realization connects the regulation of height degree. Adopt passageway self -adaptation suspension's ship boarding bridge stability is good, and the structure is comparatively simple, low in production cost, and the equipment is simple and convenient, and the production installation cycle is short.