The utility model discloses a walkway plate fixation structure of a railway coal hopper car chassis, which comprises a walkway plate body, wherein a longitudinal reinforced beam is disposed on one side of the walkway plate body, an installation plate is disposed on the other side, the longitudinal reinforced beam is firmly welded to a traction beam and a side beam of the hopper car chassis, and the installation plate is firmly welded to an end beam of the hopper car chassis, so that the walkway plate body is firmly installed on the hopper car chassis. In the design, the aluminum alloy walkway plate is used, self weight of a complete car is reduced and serious corrosion of the walkway plate in the existing coal hopper car is avoided; the walkway plate is firmly connected to the hopper car chassis to prevent falling and missing of the walkway plate; and the walkway plate is entirely molded through stamping and has good rigidity, reasonable, precise and beautiful structure and good anti-skid effect. With the design, the whole car structure becomes more reasonable, precise, economic, practical and reliable, has good manufacturability, reduces manufacturing cost and increases economic performance.