Abstract: In the new era where information technology is increasingly developed and mobile self-media is rapidly developing, the cyberspace has become the main battlefield and main front for discourse power competition. The traditional ideological discourse power construction model with the dimensions of "reality, entity and offline" has gradually evolved into a modern network ideological discourse power governance model with the dimensions of "online-offline, entity interaction and reality-virtuality". To grasp the evolution logic of the construction of the network ideological discourse power on the three dimensions of the transformation of the mode of discourse subject, the transformation of the state of discourse object, and the transformation of the construction of discourse space is of great significance for effectively preventing and resolving major risks in the field of network ideology and continuously improving the network ideological discourse power in the new era.