Abstract:"3-Zone Interaction" is a new interactive model of regional innovation system which links up university,science park and public community.In this innovation model,university is regarded as the innovation source,science park the innovation body and public community the innovation support system.And then based on the division theory and model,an analysis is made of the driving mechanism of "3-Zone Interaction".The result shows that the urgent role-transition requirements of university,science park and public community strongly drive "3-Zone Interaction" foundation,and the foundation of "3-Zone Interaction" will further drive the smooth transition of the above 3 players.So this driving mechanism will help the "3-Zone Interaction" mode become a healthy and spiral-rising innovation model.