Human thermal comfort is affected by factors such human physiology, thermal perception of clothing amount, temperature, humidity and wind speed. This study collected data from five measuring stations on the same street but in different environmental conditions from 11 am to 22 pm on September 3rd, 4th and 5th in 2011. The data were used to calculate WBGT (Wet Bulb Globe Temperature) and MRT (Mean Radiant Temperature) index, to clarify the thermal comfort affected by the urban street environment, and to provide recommendations to the street environment and thermal comfort improvement. The measurement and analysis results showed that that the thermal comfort and thermal environment of city streets was affected by building shadow, planting shadows, architectural and pavement material, ventilation, humidity, sunlight conditions, meanwhile, reacted in dry bulb temperature(air temperature), wet bulb temperature, relative humidity, the average wind speed, globe temperature and other measured data. Of these five measuring points, two had better thermal comfort and thermal environment due to their better shading environment. Moreover, one measuring point near the green corridor had a higher air temperature, globe temperature, WBGT and MRT as well as the measuring points on the street even though it has good ventilation and evapotranspiration cooling conditions, because it don’t have nice shading. These data show that, for improving the thermal environment and thermal comfort, providing shade is a much better strategy than providing ventilation or cooling through evapotranspiration. In contrast, radiation temperature is a key factor in WBGT. Analyses of data for these measurement points show that areas that are shaded (covered by the shadows of buildings or trees) have lower radiation temperature. Therefore, this study suggests that shaded areas in urban streets should be increased for mitigating urban warming and heat island effect. Therefore, applying the proposed methods of controlling the street environment can not only improve the thermal comfort of streets, but also reduce air conditioner energy consumption and carbon emissions to achieve targets of carbon reduction.