Abstract:Public opinion has become an important factor concerning national security,playing an increasingly indispensible role in social management.Separation of mechanism research and guidance study is a widespread existence at present,and physical performance of online public opinion on various types of complex networks is more focused on the mechanism level,without much close connections to actual events.Qualitative descriptions predominate in guidance study,lacking the basis of quantifiable assessment.Supernetwork modeling method,combined with policy simulation technologies used in both qualitative consultation and quantitative simulation to study the guidance strategies and recommendations for online public opinion,is a new model from a systematic engineering perspective to explore this complex social problem.As the first one of the series studies,this article is designed to describe the online public opinion through the establishment of a supernetwork model with multidimensional subnets,which are social,psychological,environmental and viewpoint subnet.This article can also lay the theoretical foundation for the research of formation and intervention of online public opinion by the designed interaction mechanism of self-consistent logical multilayer network.