Abstract: In this paper,a heavy truck with a double-cylinder compressor is taken as the research object. In view of the booming problem in the engine speed range of 1260-1480 rpm and 1550-1660 rpm,the source-routing-response analysis method is adopted to determine that the main transmission path is the compressor-the suction pipe-the air filter-the high inlet-the cab,and the problem frequency band is 57-67 Hz and 70-75 Hz. According to the principle of resistance muffler,an expansion muffler is added to the suction pipe,and the subjective feeling of booming disappears. At the speed range of1260-1660 rpm,the order noise is reduced by 11. 7 dB（ A）. Under the premise of not changing the layout of the original vehicle,the optimization scheme solves the booming problem with a small change and a lower cost,which has a certain engineering guiding significance.