As China's urbanization process accelerates, the social integration of its mobile population has attracted increasing attention from researchers. Social participation is crucial for gauging social integration, with group identity and social exclusion as push and pull forces. However, existing studies have predominantly focused on qualitative and regional analyses, failing to capture the broader picture of the mobile population's social participation. The study utilizes data from 169,989 respondents in the 2017 China Migrants Dynamic Survey (CMDS 2017), integrating group identity and social exclusion concepts into a unified analytical framework. It examines their effects on the social participation of the mobile population and tests their interaction between these factors. These findings reveal that group identity significantly enhances social participation. Conversely, social exclusion hinders it. Moreover, group identity and social exclusion interact significantly, affecting social participation. A strong group identity can mitigate the adverse effects of social exclusion, which can diminish the positive impact of group identity. Additionally, the study uncovers intergenerational, working distances, and social strata variations in the effects of group identity and social exclusion on social participation. • First, this study explores the social integration of migrants in China, offering additional research insights. • Second, existing research on migrants' social integration, identity recognition, and social exclusion predominantly utilizes qualitative, regional approaches, lacking empirical analysis leveraging large datasets. This paper aims to fill this methodological gap. • Third, this paper introduces a comprehensive framework that amalgamates group identity and social exclusion to assess social integration and participation. • Enhancing the research framework, the study adopts the "push-pull" dynamic between group identity and social exclusion as its analytical lens. Employing a dataset of 1,699,899 migrant samples, it conducts an empirical analysis to investigate the effects of group identity and social exclusion on social participation among Chinese migrants, including examining their interactive effects. [ABSTRACT FROM AUTHOR]