Abstract: Traditional regulatory models have become increasingly inadequate in addressing the complexity and rapid evolution of artificial intelligence (AI) technologies. Regulatory sandbox have gradually expanded into the AI domain, emerging as tools to balance security and development by offering flexible regulatory spaces.These sandboxes have been adopted by numerous countries worldwide.At present, mechanism design of the AI regulatory remains in the exploratory stage, with divergent practices across countries in key aspects such as legal authorization, regulatory boundaries, and governance models.This paper reviews the origin, evolutionary path and international application of AI regulatory sandboxes, and adopts the framework of "experimentalist governance" to guide the construction and operation of regulatory sandboxes.We summarize the operation processes of artificial intelligence regulatory sandboxes in 9 countries around the world, and extract the mechanisms of framework goal setting, independent experimental execution, supervision and feedback, evaluation and adjustment.This mechanism illustrates the applicability of regulatory sandboxes in enabling dynamic policy adjustment, fostering multi-stakeholder collaboration, and promoting regulatory innovation. It facilitates the continuous optimization of policy objectives by encouraging effective interactions among regulators, innovators, and consumers through real-time feedback and coordinated efforts, thereby fostering a positive relationship between technological innovation and regulatory compliance.The development of AI regulatory sandboxes should focus on sector-specific regulatory approaches, the formulation of measurable application criteria, and the enhancement of international cooperation and mutual recognition mechanisms to address global governance challenges posed by AI technologies. By promoting the localized evolution of sandbox systems and actively participating in the formulation of international standards, China can enhance its AI governance capacity between domestic and international regulatory systems.