The utility model relates to a steel construction passenger footbridge resistance to plucking crab -bolt device, directly catch hold of the crab -bolt with a hook including the L type, it is pre -buried inside the concrete bent cap that the L type directly catches hold of the straight hook portion of crab -bolt with a hook, the main part that the L type directly caught hold of the crab -bolt witha hook ran through crossbeam bottom plate and backing plate, the backing plate sets up the upper portion at the crossbeam bottom plate, all opened on crossbeam bottom plate and the backing plate and directly caught hold of crab -bolt complex long slot bore with a hook with the L type, backing plate upper portion sets gradually and directly catches hold of crab -bolt complex packing ring and nut with a hook, the main part that is located nut upper portion is equipped with the through -hole, the central line of through -hole is perpendicular with the central line of main part, is equipped with the pin in the through -hole. Link to each other girder and concrete bent cap through setting up the crab -bolt device, compress tightly the girder, can prevent girder up -pull and luo liang.