Modernization of mechanisms is very important to the development of mechanical industry.Generalized mechanism,controllable mechanism,conceptual design of mechanism system,robot and walking machine mechanism,micro mechanism and micro drivers,bionic mechanism,and new type mechanism are the main research fields of modern mechanisms.The formation and application of mechatronics system is the symbol of the production of modern mechanisms.The leading differences between the modern mechanism and traditional mechanism lie in:different understanding to the meaning of mechanism,different components of machine,different design theory and method of mechanism.Modern mechanisms has a broad application prospect,it could make great effect on controllable mechanism,robot,micro mechanism,mechanical dynamical analysis,etc.