In traditional China’s complicated social system,custom interaction laid the foundation for national politics’ design and local society’s operation,and has been continued in the construction of modern nation state since the May 4th Movement.The core of custom interaction is to link up the national politics and the micro-politics in folklife,as well as to eliminate the explicit and potential social crisis by way of cultural recognition.Therefore,it needs broad participation of the whole society to realize this goal.Today,with the speedy development of globalization and informationization,our country is confronted with multiple ordeals such as international rules,national legal and folk governance and so on,and traditional political intelligence in custom interaction would be helpful.