The practical role of digital platforms in fostering circular economy (CE) among businesses remains unresolved.Unlike previous research on digital platforms and firm performance, this study analyzes the bridging function of the value creation system from a value creation perspective. It identifies resources (business model innovation) and relationships with other value creators (closed-loop supply chain) as key elements for achieve CE.Using survey data from 243 firms, this study validates the significant mediation of business model innovation and closed-loop supply chain in the relationship of digital platforms - CE. This narrows the theoretical gap and expands value creation-based CE research.