The Sci-Tech Finance platform is the necessary part of S T finance growing in China. It accords with the nature of the complexity of the innovation and the cooperation among the different parties. The platform is the ecosystem actually. For it has the characteristics of the heterogeneity and reciprocity, cross-network externalities, non-neutral Charge Structure and positive Feedback Effect which multilateral market has. It also has non-standard services, cross-integration of finance and technology, synergistic innovation of S T finance and data-based business model which S T financial industry has. As the intermediary of the systems, data is the base and the core of the S T financial service, also the crux of inefficiency and the bottleneck of ecological development for most platforms nowadays. The platform should accumulating the business data in the multilateral market, and on this basis, enriching the data products and services using the frontier financial technology, and realizing the ecological development ultimately.