It has been a research top to study the vibration and noise control of armored vehicle in theory and engineer field since the internal noise directly affects the fighter’s operational level. So carrying on this research is a necessary task. First the armored vehicle inner cavity model and the acousticstructure coupling model that considering the interaction between the structure and the air were built and analyzed. It was concluded that the body structure has some certain influence on the acoustic characteristics of the cavity by comparing the acoustic modal graphs. Then the pressure distribution at the driver’s right ear was gotten by analyzing the vehicle’s acoustic response of acousticstructure coupling model using boundary element method. Finally the panel acoustic contribution of frequency was analyzed at peak pressure, which provides a reference for improving the acoustic characteristics of the vehicle.