In order to better evaluate the vehicle handling stability performance, this paper simplified the vehicle into a three-degree-of-freedom model containing lateral, transverse and lateral sway. A joint simulation model was built on Carsim and Simulink, and the simulation test was conducted based on double shift and serpentine test conditions. According to the evaluation guidelines in QC/T480-1999, the model simulation results and the real vehicle test results were comprehensively evaluated and scored, and a comparative analysis between them was conducted. The results show that the evaluation scores of the simulation results of the three-degree-of-freedom model are very close to those of the real vehicle test results, which can better represent the handling stability of the real vehicle and provide some references for the subsequent evaluation of the vehicle handling stability.