This report first summarizes the situation of PPP contract termination from the theoretical point of view as the change of PPP project index parameters，government revenue，market economic environment，changes in laws and policies and other unexpected events. After that，deconstructs the elements of dissolution of PPP contract，that is，it is divided into objective elements，subjective elements，continuity elements and other legal elements. Then，from the perspective of practice，analyzes the liquidation and anticipated benefits after the termination of PPP contract. Finally，suggests to regulate the normal operation of PPP project through legislation，the establishment of code of conduct guidelines，“C-Feature Rule” and the exploration of PPP project performance evaluation mechanism.