Trust has been recognized as a significant factor in the sharing economy. However, there is still a lack of research that empirically examines the critical antecedents of trust in the ridesharing service, especially in China. Drawing upon Zucker (1986)’s trust building framework, this study develops a theoretical model to examine four antecedents, regarding structural assurance, government support, platform reputation and disposition to trust, on users’ trust beliefs and continuance intention of ridesharing. 307 valid data was collected in one of the largest ridesharing platforms in China, and structural equation modelling method was used to examine the research model. Empirical results suggest that platform reputation is the most significant antecedent of trust, followed by government support, structural assurance and disposition to trust. Specifically, user experience positively moderates the impact of structural assurance on trust, while negatively moderates the influences of government support and platform reputation on trust. Theoretical and practical implications are discussed in the final section.