The current unilateral and bilateral governance agreement cannot solve problems such as the large strength gap, loose organisation, and cultural diversity in cross-border data flow in Asia. Therefore, we are in urgent need of structuring a multilateral governance mechanism, that is, to build a mutual trust platform for cross-border data flow in Asia. From a digital technology perspective, the Asian Cross-Border Data Flow Trust Platform is a blockchain-based digital technology architecture. From the perspective of the organisational model, the Asian cross-border data flow governance based on the mutual trust platform can be understood as a cooperative network in which multiple Asian countries cooperate to make cross-border data decisions. As a necessary medium to eliminate the complexity of the cooperation network, legal procedures will transform the chaos on the Asian Cross-Border Data Flow Mutual Trust Platform into order by simplifying the communication between multiple agents.