In the context of rapid urbanization and environmental changes exacerbated by extreme climates, cities are increasingly confronted with risks and challenges, making safety and resilience the focus of urban planning, construction, and governance. Safe and resilient urban planning is not only a specialized plan centered on disaster prevention and mitigation, but also an overall enhancement of safety and resilience in urban planning and design. Facing the problems of and demand for stock development of cities in China and based on a "risk source ‒ exposure ‒ mitigation" urban safety framework, this study proposes theoretical principles and a logical framework of safe and resilient urban planning and design. It constructs a three-dimensional thinking structure encompassing "system ‒ time ‒ space" and proposes a three-pronged practical pathway consisting of "technical methods, planning content, as well as policies and regulations." Furthermore, the study expounds on the technical route for the transformation from basic theory to practical application, advocating that safe and resilient urban planning and design should be guided by the principle of "adapting to risks and integrating form with data." The strategic objective is set as "tolerating moderate pressure and achieving rapid recovery," accompanied by a comprehensive methodology and technical toolkit that emphasizes precise adaptation and data-driven shaping. It is hoped to establish an underlying logic for safe and resilient urban planning and provide fundamental strategies for urban safety governance.