Abstract: The regulation of fintech platforms can be fundamentally conceptualized as a dynamic contractual relationship between regulators and regulated entities. Where traditional regulatory frameworks struggle to fully encompass the evolving application scenarios of financial technology, these platforms effectively operate within a “gray space”, which refers to a realm of regulatory ambiguity and gaps. Failure to govern this space effectively may trigger systemic risks across three dimensions: technological, market, and regulatory. In addressing these latent risks, a strategy of mere prohibition is unsustainable. To achieve a dynamic equilibrium between technological innovation and financial stability, regulators should intervene in a more proactive and adaptive manner. Specifically, technological controllability can be attained through the advancement of regulatory technology; operational activities can be kept within systemic bounds via embedded supervision; and overall regulatory efficacy can be safeguarded through trigger-based regulatory mechanisms. Through the above multidimensional pathways, it is possible to mitigate systemic risks while incentivizing innovation, ultimately steering fintech towards social good.