Exploring Social Contagion based on Social Media Platform

Social contagion is a common way of influence in social groups, and it is one of the important research contents of group behavior. With the deep involvement of social media in people's life, users have changed from strong connection to weak connection. Exploring social contagion in social media environment is a new paradigm to understand group psychology. This paper constructs a novel social contagion model based on social media platform, analyzes the different elements of social contagion in the new environment, gives the calculation method of group emotion in social contagion, and summarizes the impact of social contagion. The purpose of this study is to use new data sources and new ways to understand social contagion and to help the governance of public emergencies.