Artificial intelligence (AI) is not a newly emerged technology; it began developing as early as the 1940s. In recent years, driven by advances in computing power, the explosive growth of digital data, and the emergence of generative AI tools like ChatGPT, AI has become increasingly integrated into daily life, with enterprises actively adopting AI to improve efficiency and service quality. However, its rapid deployment also brings concerns over information security, system bias, privacy infringement, and other risks. The“black box”nature of AI makes decision-making processes opaque, leading to unfairness and ethical risks. AI applications in healthcare, autonomous vehicles, and credit scoring could endanger personal safety, property, or fundamental rights if algorithms or data are flawed. Additionally, deepfake technology has been exploited for fraud and to manipulate public opinion, posing serious threats to social trust and democratic systems. These challenges highlight the urgent need for AI regulation that balances technological advancement with human rights protection. In 2019, the OECD released its“Principles on Artificial Intelligence,”covering inclusive growth, respect for human rights, transparency, robustness, and accountability; the 2024 update further emphasizes rule of law and democratic values. Similarly, G20 and UNESCO released AI ethics and development principles, highlighting fairness, privacy, non-discrimination, and human oversight. In 2022, OECD launched an AI system classification framework to help countries regulate based on risk, while WHO published AI governance guidelines for the healthcare sector. Countries have followed suit with similar policies and are moving toward concrete regulations. The EU passed the“Artificial Intelligence Act”in 2024, becoming the world’s first comprehensive horizontal AI legislation, emphasizing human-centric and trustworthy AI, and imposing strict requirements on high-risk systems regarding transparency, human oversight, and data governance. The UK issued an AI regulation white paper, adopting a risk-based, context-specific supervisory approach to balance innovation and risk management. Japan enacted legislation in 2025 to promote transparent AI research and applications, prevent misuse, and strengthen international competitiveness. South Korea’s“AI Basic Act,”effective in 2025, requires developers and users to conduct impact assessments and ensure transparency and safety. Australia is considering mandatory regulations for high-risk AI and also adopts a risk-based governance logic. The EU’s AI Act follows a“risk-based”regulatory model, categorizing AI risks into unacceptable, high, specific transparency, and minimal risk. Applications with unacceptable risks, such as those manipulating subconsciousness or impairing informed decision-making, are banned. High-risk systems must comply with strict requirements, including risk management, data governance, technical documentation maintenance, and clear regulatory responsibilities. Applications with transparency risks, such as chatbots, must be labeled as AI, while minimal risk applications have no mandatory regulation and rely on voluntary codes of conduct. To promote responsible innovation, various countries have introduced regulatory sandbox mechanisms. The EU’s AI Act mandates member states to establish AI sandboxes, enabling controlled testing to ensure compliance and accelerate market entry. The UK has sandbox programs for personalized AI, AI as medical devices, and fintech, while Singapore launched a generative AI evaluation sandbox and a fintech sandbox to balance innovation and risk control. The widespread adoption of risk-based regulatory thinking can serve as a reference for Taiwan’s promotion of the draft Basic Law on Artificial Intelligence. Overall, global AI governance has shifted from principle-based advocacy to substantive legislation and practical implementation, commonly adopting risk-based regulatory thinking. Moving forward, how to further strengthen cross-border cooperation, ensure human rights and privacy protection, and maintain AI innovation momentum will become critical challenges faced by the international community.