On the basis of comprehensively analyzing of international literature and journals related to urban frontier re-search,we screened the literature with urban as the theme in the SSCI issued literature library included in WOS from January 2018 to March 2024,used Citespace to realize the literature vi-sualization and analysis,and further extracted the theme from top journals for review.The results show that:the visualization results clarify the research hotspots such as smart city and urban resilience,and the popular research methods such as machine learning,and show the current status of urban cutting-edge re-search from the chronological and country-specific dimensions;the review of literature in the top journals realizes the generaliza-tion and integration of the popular urban themes,which are sum-marized as the theoretical model of the urban economy,transpor-tation,energy and urban operation,agglomeration and innova-tion,urban renewal and planning,greening and environmental ecology,attributes and city name cards,impact of sudden public health emergencies on cities and urban resilience,digital tech-nology and smart cities,and further subdivided into each catego-ry.The results of the evaluation show that the international fron-tier urban research has been rapidly updated and expanded,the degree of integration between urban disciplines and other disci-plines has been increasing,and the quantitative analysis has re-alized the improvement of comprehensiveness and technology,and the qualitative analysis has realized the improvement of rigor and comprehensiveness.Existing research presents characteris-tics such as the use of"new"approaches for"old"themes,the use of"integrated"approaches for"individual"themes,and the use of"ingenious"approaches for"innovative"themes.Based on the conclusions of the study,suggestions and prospects are put forward in terms of the selection of traditional urban top-ics,research methods and frontier exploration.
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