The comfort in helicopter cabin is significantly affected by the mid- and high-frequency noise caused by the main gearbox. Based on its noise transfer path， the development of cabin noise control technology is summarized in three aspects， including the supporting structure， the bulkhead and the internal cavity with passive， active and semi-active control methods. The results show that helicopter cabin noise in abroad is mainly controlled through the passive technologies such as damping vibration attenuation of panel， sound barrier with sealing， and sound absorption in cabin. However， some problems are appeared with respect to weight， economy， and limited control effect. The vibration reduction technology on the supporting structure has provided a new way for the efficient noise reduction of main gearbox， which has been combined with the comprehensive optimization to make some helicopters reach the cabin noise level of commercial aircraft. Nevertheless， the research and application of helicopter cabin noise control technology are inadequate in domestic. To obtain the new methods and ideas suitable for the helicopter development in China， the researches like the noise transmission mechanism， noise reduction design， verification and optimization should be further developed according to the realistic engineering application background of helicopters.