In the global context of shifting towards sustainable development, establishing an effective legal framework has become an imperative for all nations. This paper focuses on analyzing China's legal system for promoting sustainable innovation and green growth, a model that has garnered significant attention. Employing comparative law, policy analysis, and synthesis methodologies, the study elucidates China's core legal mechanisms, including green finance, intellectual property for clean technologies, and environmental standards. The paper identifies the successes and practical challenges of this framework, drawing profound lessons on developing integrated policies, investment incentives, and enforcement mechanisms. Finally, the study proposes specific recommendations to offer valuable insights for Vietnam as it continues to refine its own legal framework.