In this paper,taking microswitch as type mechanism of openable-closed electromechanical components,on basis of constructing it's finite element model of the quick acting mechanism's static-dynamic process and contact system's electrical contact process.Furthermore,we regard static-dynamic and electrical contact process as a whole by using dynamic model combining static-dynamic and electrical contact model as whole.We have constructed synthesized,have taken AK^# microswitch as example,and have given synthesized example of computer simulation.