Gear transmission is widely used in power and mechanical driving device

moreover it is the main vibration and noise source.The research developments of reducer vibration and noise mechanism

prediction method and control measures are reviewed.The gear whine noise and gear rattle noise mechanism are introduced.The early application and development of experience formula method and FEM-BEM

SEA numerical methods in reducer noise prediction are commented.In the aspect of reducer vibration and noise reduction

the gear parametric option

gearbox structure improvement

damping material application

gear tooth modification and active control method are summarized.The useful theoretical guideline to the design of the gear reducer is provided.Finally

some problems existed are pointed out for further study.