With the rapid development of the new energy vehicle market, air suspension systems have gradually become an important configuration in electric vehicles due to their superior comfort and stability. As a key component of the air suspension system, the dynamic response of the air spring directly affects the vehicle's driving performance and passenger comfort. Therefore, researching the dynamic characteristics of air springs is of great significance. However, effectively simulating and analyzing the dynamic response characteristics of air springs has been a challenge in air suspension system design. This study, based on the ANSYS simulation platform, established a dynamic response model for the air spring in the closed-loop air suspension system of electric vehicles. This model effectively simulates the inflation process and pressure changes of the air spring under various working conditions, accurately capturing its dynamic characteristics. The model not only provides a prediction of the air spring’s behavior in practical applications but also offers a theoretical foundation and research direction for subsequent optimization of air suspension systems. Through the construction of a closed-loop air suspension test platform, the accuracy of the simulation model was validated. The results indicate that the established model accurately simulates the inflation process, pressure fluctuations, and dynamic response characteristics of the air spring, providing a basis for further optimizing air spring performance and improving the comfort and stability of the suspension system.