The conflict of discourse power among public administration is the dual property of the discourse power: the internal conflict of public power and citizen authority, and the reflection of politics and economy conflict for profit among discourse behaviours as well. It mainly indicates the contradiction between the discourse regulation and freedom. The goal of eliminating the conflict of discourse power and reconstructing the harmonious discourse power can be constructed guided by the democratic thoughts of the discourse power in many aspects, in order to achieve the co-governance and fulfilment of the discourse power.