Abstract: With the diversified development of high-speed railway trains, the structure of bogie needs to be adjusted to accommodate new requirements. Aiming at more effective and rational transmission of the bogie parameter changes, a 3D skeleton design method for high-speed train bogie is proposed base on the top-down design ideas, which will address the impact of parameter changes over different components and parts. Firstly, the changes of high-speed train bogie functional modules are analyzed; then, a 3D skeleton model is established on the CATIA CAA platform with the top basic skeleton (TBS) as the design core. Finally, taking the parametric design of an axle box spring as example, the feasibility of this design method and the correctness of the skeleton model are verified.