Based on the analysis of the practices of New York, London, Tokyo, Paris and other cities in accelerating the integration of sports and urban development, it is evident that the important ways to promote the integrated development of sports and cities include creating a symbiotic environment to enhance the pace of integration and development of sports and cities, consolidating a symbiotic interface to plan the development situation, focusing on symbiosis and co-prosperity to enhance its vitality, and optimizing the symbiosis mode to unleash its potential. Consequently, to promote the deep integration of sports and cities in China, it is necessary to create a good development environment to stimulate the "new vitality" of sports-city integration, drive the integration and co-governance of multiple bodies to bring together the "new dynamics" of sports-city integration, innovate and expand the symbiotic interface to create a "new carrier" for the integration of sports and cities, explore the model of reciprocity and symbiosis, and open up a "new blue ocean" of the integration.