Abstract The mechanical and aerodynamic noise analytical models were built by statistical energy analysis method, according to the characteristics of the helicopter. The energy distribution of surface noise sources and the vibration response of airframe were obtained by analyzing experimental data and then used as the input conditions for the models. The noise response in cockpit was predicted in average form. Additionally, the primary energy transfer paths to cockpit noise response were brought out by comparison of different energy contributors. At last, corresponding measures for reducing cockpit noise were analyzed, which are useful for practical projects.