Abstract: With the increasingly refined development trend of urban microclimate research, the research on the relationship between microclimate and crowd behavior has become an important part thereof. Sorting out relevant results will help researchers fully understand the action mechanism of urban microclimate environment on crowd behavior, and thus enable them to plan and design urban public spaces from the bottom up scientifically and reasonably. With the Web of Science Core Collection database and the CNKI database as the data source, this research summarizes relevant researches from the three aspects of literature quantity, institutional cooperation network and journal distribution and, through the co-citation cluster analysis of relevant literature, finds that the current research context mainly extends and develops toward the two directions of objective thermal comfort indices and environment-behavior studies. Additionally, the research mines hotspots from the three aspects of microclimate, space and behavior: in terms of microclimate, it discusses the influence of comprehensive indices (PET, WBGT, etc.) and sub-elements (temperature, solar radiation, etc.) on crowd behavior; in terms of space, it covers both macroscopic and microscopic spatial elements; in terms of behavior, three types consist of recreation, physical activity and walking. Based on this, the research proposes three issues worthy of further exploration, namely systematic research on the interaction between microclimate, space and behavior, application of new methods and technologies in research on the relationship between microclimate and crowd behavior, and balance of research and exploration between various climatic zones and regions, in hope of providing and guidance for subsequent researches on the relationship between microclimate and crowd behavior.