Abstract: Through a combination of theoretical analysis and engineering practical case research method, the analysis on selection of spring support of piping is made. This paper sketched the application and classification of the spring support, and pointed out the main characteristics of 2 types of spring supports. The force of spring support for the pipeline under different working conditions is analyzed, and the principle of load design and the theoretical basis for the stiffness check are given. Analysis of the effect of spring support on the piping in the earthquake is also made. Finally, as an engineering example, the selection process of spring support for main steam pipeline of a nuclear power plant is described.