This study offers a comprehensive analysis of critical aspects within the domains of financial technology (Fintech) and online payments, with a focal point on the regulatory dimension. It commences by exploring how Fintech, propelled by technological innovations, has orchestrated a paradigm shift, ushering in the digital economy and digital civilization. It underscores Fintech's role in mitigating longstanding issues in traditional finance, particularly information asymmetry and high-risk premiums, harnessing the potential of big data, cloud computing, blockchain, and artificial intelligence. The study extends to a detailed evaluation of the intelligent investment advisory sector (Robo-Advisor) and online payments, delving into security concerns and regulatory considerations. A pivotal highlight is the transformative potential of digital currencies, including central bank digital currencies (CBDCs) and cryptocurrencies, in revamping payment systems, fortifying security, and reducing cross-border transaction costs. Regulatory upgrades play a paramount role in shaping this transformation, ensuring the security of online payments and fostering compliance.