Abstract: For a long-span and arched steel canopy without column on platform in Taizhou railway station，the steel pipe column filled with concrete and steel pipe truss with inverse triangle section were used for its main structural system． As a sensitive system to wind load，engineering design parameters were determined through wind tunnel test and vibration analysis; the internal forces were analyzed by three-dimensional finite element model，including temperature action and the influence of horizontal propulsive force on the long-span arched steel canopy; and the entire stability was studied; through rational support system，the structural stiffness was ensured also．