Abstract: The “cascading effect” of typhoons refers to the chain reac6on and interac6on of mul6ple factors that amplify disaster losses, posing severe challenges to urban and rural environments in affected regions. Reducing risks and enhancing resilience through appropriate construc6on has become a cri6cal goal for sustainable human se@lements. Following a technical pathway of “response mechanisms—disaster dynamics—construc6on strategies,” this empirical study focuses on the cascading “typhoon—rainstorm surge—urban flooding” process in the Hongqiao watershed of Yueqing City. The study interprets the three-6er drivers of cascading disasters—coastal and land-based founda6ons, watershed characteris6cs, and urban-rural spa6al pa@erns—while establishing a governance-oriented “process control” approach. Aiming for a balance between disaster and peace-6me objec6ves, the study develops urban-rural construc6on units that integrate “hydrology—topography—needs” synergis6cally. It unveils response mechanisms for urban-rural environments under cascading typhoon disasters, iden6fies the nonlinear dynamics of typhoon-triggered disasters, and formulates adaptable strategies for construc6ng resilient urban-rural environments. The findings aim to provide technical methods and strategic pathways for disaster-adap6ve construc6on in typhoon-prone regions.