Under the background of urban renewal in China, enhancing urban landscape has become an important strategy for reconstructing spatial resources and achieving sustainable development. With the process of urbanization shifting from incremental expansion to stock optimization, as of 2020, the built-up area of cities has reached 62000 square kilometers, and the proportion of stock construction land exceeds 60%. Urban renewal urgently needs to promote the coordinated regeneration of multidimensional values such as ecology, culture, and society through landscape enhancement. At present, research on urban landscape improvement presents a multidimensional goal framework of ecological restoration, cultural continuity, functional optimization, and social integration. However, there is still a systematic disconnect between theory and practice, manifested in the conflict between ecological protection and development orientation, the lack of regional characteristics caused by standardized design, and the absence of public participation mechanisms. This study first introduces relevant concepts and theories, including the connotation, development stages, and policy orientation of urban renewal, the target dimensions of urban landscape improvement, and the theoretical basis of urban renewal and landscape synergy. Then, the current situation of urban landscape improvement in China was analyzed, and practical progress and typical models such as scene activation of historical and cultural blocks, landscape regeneration of industrial relics, and public space reconstruction of old communities were elaborated. The existing core contradictions and challenges were also analyzed. At the same time, the landscape regeneration strategies in European urban renewal, the experience of public space creation in the US High Line Park model, and the refined landscape design of compact cities in Japan were analyzed and summarized. The similarities and differences between these strategies and the landscape improvement ideas of Chinese cities were explained, and valuable experiences were summarized for reference. Finally, summarizing the research content, the conclusion is drawn that China's urban landscape improvement has formed a practical framework with local characteristics, but breakthrough innovation is still needed in theoretical construction and implementation paths. Design strategies need to break through traditional engineering thinking and establish a collaborative mechanism for ecological restoration, cultural inheritance, functional optimization, and social governance. Based on the current situation and needs of landscape improvement in the context of urban renewal, suggestions are proposed to improve the policy system and institutional framework for urban renewal, strengthen the integration and application of technology with ecological priority orientation, deepen innovation in community governance and public participation mechanisms, promote local practice paths for cultural inheritance, build a smart technology support system, and strengthen the localization and transformation of international experience. The study of urban landscape enhancement is a long-term and dynamic research work that requires timely sorting, summarizing experience, and guiding research directions. Through the synergistic effect of institutional innovation, technological innovation, and governance system reform, China's urban renewal is expected to form a localized landscape optimization paradigm, and output Chinese solutions for the sustainable development of global cities.