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Research background：During summer training, we found that there was a significant difference between the surface temperature of the PU track and the air temperature, which aroused concern about the change of surface temperature. Especially for track and field school team athletes, long-term exposure to high temperature environments may affect training and health. Research Objectives： In order to understand the difference between surface temperature and air temperature more objectively, we plan to conduct systematic data observations to explore the impact of different times, weather conditions and surface materials on surface temperature, and analyze the main reasons for the temperature difference. Research methods：PU track, grass and cement ground were selected as experimental samples, the surface temperature and air temperature of various materials were measured in various climates, and the relevant environmental parameters were recorded. Use data analysis tools to compare temperature characteristics under surface materials and weather conditions. Results of the study：Preliminary results show that the surface temperature of the red PU track is the highest on sunny days, with a difference of more than 15°C from the air temperature, while the temperature difference of the grass track is relatively small. On cloudy days, the temperature difference between the three types of land surface decreases significantly, indicating that weather conditions have a significant impact on the temperature difference.