Economic operation in any society needs credit. Under modern market economy of socialized division of labor, the demand of credit is much higher. As it were, credit created western modern capitalism and modern market economy is credit economy. Traditional China society’s credit resources are meager and can not meet the demand of modern market economy. Because of historic and current reality, social and economic development of contemporary China is facing unprecedented credit bottleneck. In order to get rid of the dilemma, political system reform must be conducted, meanwhile, other reforms must be followed so that the basis of credit of socialism market economy can be established.