Abstract: 【Purpose/significance】This paper studies the attitudes of network users to fake social news and information behavior under
different involvement levels,and analyses the acceptance conditions and trust degree of users to false information,in order to provide
ideas and references for further research【. Method/process】Based on literature research,this paper combs the influencing factors of us-ers'attitudes and behaviors,puts forward research hypothesis and constructs theoretical model with the Elaboration Likelihood Model as the research framework.Taking the relevant information and behavior data of network users as the research data source,337 valid sample data were obtained by questionnaire method, and the data were processed by SPSS software.【Result/conclusion】User's own ability and involvement levels are the main factors affecting user's behavior of fake social news dissemination on the Internet.Ability negatively affects user's trust attitude towards social news.In the case of high user involvement level,the influence of information envi-ronment and reliability has increased,while the influence of information differences is small【. Innovation/limitation】Discussing the in-fluencing factors of the dissemination of misinformation from the perspective of user attitudes and behaviors improves the accuracy of false information governance,and theoretically further enriches the application of the ELM model ; there is room for further discussion in the selection and accuracy of samples。