The booming noise performance is one of the most important factors in determining the NVH quality of a vehicle. This paper presents the study of causes and paths of the interior booming noise of one minibus by combining simulation and experimental methods. It is determined that driveline torsional vibration is one of the main sources of interior noise. Experimental results show that optimizing clutch parameters lead to the overall sound pressure lever decreasing by 1.6 dB(A) and the second order decreasing by 5.5 dB(A). These results demonstrate that the interior noise of the minibus obviously reduce by driveline torsional vibration control with optimizing clutch stiffness and damping parameters.