Abstract: In this paper,a certain new railway curved-bridge on a small radius curve and a reverse curve was taken for the case, and the motion equation of vehicle curving and three-dimensional space bridges were established on considering the characteristics of vehicle curving and nonlinear creep theory of a wheel-rail interaction. The motion equations were solved by a modal superposition method. The numerical analysis of the new curved bridge dynamic responses was solved by a professional program called VBC2.0, and some laws of vehicle-curved bridge coupling vibrations were summarized, and reasonable speed and other suggestions for vehicle curving this special bridge were proposed.