With the rapid progress of global urbanization, the rail transit industry, known for its unique advantages of being economical, environmentally friendly, and efficient, is experiencing a period of rapid development. Exploring the impact of the thermal environment of rail transit on human thermal comfort has become a popular research topic. This study primarily used the literature on the thermal comfort of rail transit environments from the WOS database as data sources. By employing bibliometric and visualization analysis methods, the CiteSpace software was used to create knowledge maps of thermal environment comfort research in rail transit. It organizes the research hotspots and frontiers in this field, and analyzes and reflects on the current research progress, aiming to provide references for future studies on thermal environment comfort in rail transit.