Demassification is an important practical concept in Marxist ideological and political education. The application of the concept of demassification in the practice of ideological and political education has deepened with the development of information dissemination technologies, giving rise to a practical model of demassification of network ideological and political education. Demassification of network ideological and political education represents a demassified form of ideological and political education, where the subjects of ideological and political education provide differentiated and customized ideological and political education information to specific audiences or audience groups based on their diverse needs. In the operational structure of demassification, the differentiated needs of the educational objects, as information recipients, and the information supply of the educational subjects, as dissemination agents, are the two most critical elements. In this sense, the essence of demassification of network ideological and political education lies in achieving “supply-demand alignment”, which is the process of effectively delivering ideological and political education information to the educational objects. Specifically, this process involves three main steps. The first is to conduct an in-depth analysis of the diverse information needs of the educational objects to accurately identify their specific ideological and political education requirements. The second is to objectively analyze the existence modes of the educational subjects and their capacity for information supply. The third is to scientifically align the content, form, and carriers of ideological and political education dissemination in the online environment based on the actual supply-demand conditions. Favorable conditions for the smooth advancement of the dissemination of network ideological and political education can be created by empowering the analysis of ideological and political education objects through digital technologies, optimizing the supply of ideological and political education information through educational talent development and platform construction, and promoting the precise implementation of ideological and political education through the customized application of scientific practice plans.