To investigate the influence of the dual-mass flywheel (DMF) on the vehicle driveline torsion vibration, a DMF simulation model was built based on DMF theory analysis. The torsion stiffness characteristics of the DMF were measured under various amplitudes. The simulated and measured hysteresis cycle curves were then correlated. Subsequently, a driveline torsion vibration simulation model was developed using the correlated DMF model. The simulated and measured rotating speed fluctuation were compared under idle and 3^rd gear wide open throttle (WOT) conditions. Sensitivity analysis of the DMF design parameters was conducted to study the matching design of driveline torsion vibration and DMF parameters. The results indicated that the DMF reduced rotating speed fluctuation amplitudes by 70% to 90% at the engine combustion main order frequencies, thereby decreasing the risk of torsion vibration issues.