The purpose of this paper is to explore the influencing factors of users' use of "visitor record" function from the two dimensions of technology itself and users' social media use psychology. Based on the integrated information technology acceptance and use Model (UTAUT), and based on the perspective of users' social media use, two factors of "self-disclosure degree" and "missing anxiety" were introduced, and the Weibo user group was taken as the research object through questionnaire survey method. Based on the 313 questionnaires obtained by screening, the analysis was conducted by hypothesis testing and multiple linear regression methods. The effects of integrated technology acceptance model factors and two newly introduced factors on user intention and behavior were explored. Performance expectancy, effort expectancy, social influence and facilitating factors have significant positive effects on users' intention to use the "visitor record" function of Weibo. The facilitating factors have a negative influence on the user's use behavior of the "visitor record" function of microblog. The introduction of new perspectives, including fear of missing out and degree of self-disclosure, provides new ideas for further understanding of social media user behavior and subsequent related research.