Currently,China's major cities exhibit high-density development,with urban renewal emerging as a pivotal strategy to enhance urban habitat quality and propel high-quality urban development.The renewal of aged residential areas is underway extensively;nevertheless,intricate challenges such as inadequate policies and diverse demographic needs underscore the necessity for a government-led,multi-stakeholder approach to residential renewal.Singapore and Hong Kong,as representative high-density cities in Asia,have undergone nearly two decades of residential area renewal,amassing valuable experiences.This study compares the urban renewal evolution of the two cities,and summarizes the experiences of urban area renewal from the perspectives of policy formulation,demand adaptation,multi-party participation,cultural inheritance and three-dimensional integration,and proposes suggestions for mainland China's urban renewal.