According to the structure character of cylindrical helical compression springs used in the rail vehicle, a secondary development for the parametric design of such springs was performed under the platform of SolidWorks by Visual C++. More than this, parametric models of the spring used on the existing rail vehicle were accomplished. Based on the railway technical standard and document, parameterized modules of single spring with one-stage stiffness, double-spring group with one-stage stiffness and double-spring group with two-stage stiffness for rail vehicle have been developed, which shorten the design cycle and improve the design quality and efficiency.