With the meteoric progress of digital technology and the advent of network economy, there has been increasing interest in the business model of purchasing with B2B network among B2B e-commerce platforms and customer firms. Based on the perspective of parasocial relationship and dual-process theory, this study constructs a model of cognitive and emotional influences on customer firms' behavior, and analyzes the influence of features of entrepreneur endorser and online purchasing platform on B2B parasocial relationship, and how this relationship can affect repeat purchase intention. Furthermore, this paper examines the moderating effect of trust in the relationship between B2B parasocial relationship and repeat purchase intention. Findings indicate that perceived interactivity and trustworthiness of entrepreneur endorser and the service and product quality of online purchasing platform have a positive impact on B2B parasocial relationship. B2B parasocial relationship has a significant and positive impact on repeat purchase intention, while trust moderates the relationship between B2B parasocial relationship and repeat purchase intention. •Features of entrepreneur endorser affect B2B parasocial relationship.•Features of online purchasing platform affect B2B parasocial relationship.•B2B parasocial relationship affects the repeat purchase intention of customer firm.•Trust has moderating effects.•Trust strengthens the positive effect of B2B parasocial relationship.