Xi Jinping is adept at using dialectics to analyze and solve the problems in social governance，and forms his thought on social governance with distinctive Chinese characteristics. He analyzes some basic issues such as the essential characteristics，the theoretical basis，the ways of realization，the reliant strength of social governance from the perspective of materialise dialectics and forms his thought on social governance which contains the nature of dialectical thinking. The dialectical thinking is reflected concretely in the dialectical unify of the social governance system and its subsystems and elements，the dialectical unity of the two-point doctrine and focal-point one，the dialectical unity of the inheritance and innovation，the dialectical unity of the objectives of social governance and improvement of people's livelihood，and the dialectical unty of the subject and object. To analyze and summarize the dialectical thinking of Xi Jinping's thought on social governance deeply and systematically is of important guidance to perfect the system of social governance， improve the capacity of social governance and improve people's well-beings···