Reverse logistics outsourcing is a blending governance structure between markets and hierarchy,the cost of which involves transaction and operational costs.Both the transaction cost theory and the instructive model created by Williamson contribute to the analysis pattern of the transaction cost efficiency.In this paper are conducted the researches into its influential factors and operational mechanism for the transaction cost efficiency based on reverse logistics market transaction from the static,dynamic perspectives.In a static sense,specific assets as well as uncertainty play a major role in the cost efficiency,and the core competitiveness and reverse logistics information have some impact as well;in a dynamic sense,the information development,the win-win cooperative competition,and the interaction of these two inhibit the influences of the major factors in the static case,and conversely they promote the evolution of reverse logistics market transaction.