Abstract: The development of China's market economy merges into the international division of labor from the very beginning,so it is not like the classical Western market economy,the matched moral constraint is not derived from spontaneously,which also makes our society tend to the prisoner's dilemma. Therefore,in the Chinese context,it can only rely on the external awareness of moral constraint construction to solve this problem.The construction of this moral constraint will be done by the establishment of the trust to reduce the cost of altruistic acts in order to establish the altruistic behavior germinal system,and then the goal of the building of moral constraints is reached.