Under the background of the rapid development of new media technology, the cultural development between cities has become increasingly important. At present, the development of digital media has spawned a new form different from the traditional fan culture. With the widespread use of social media platforms, fan culture and live broadcasting industry play a crucial role in shaping urban brands and enhancing urban competitiveness. Based on this background, this paper will conduct a comprehensive analysis of urban culture through literature research and summary, conduct quantitative research and platform content analysis, and study the influence of fan culture on the construction of urban brands through social media.