To solve the existed problems in the work of dynamic driving device, the dynamic device were analyzed by using TRIZ methods. The technical conflicts were determined and the invention principles were obtained by TRIZ conflict resolution principles; through establishing TRIZ substancefield model of dynamic device, solution methods were found according to the standard solutions. The dynamic device was innovation designed by the combination of TRIZ principle of conflict resolution and substancefield analysis, the piezoelectric ceramic was used to replace the hydraulic, and the technical conflict and harmful effect were eliminated, so the dynamic property was improved.At last,the application of dynamic device was provided.