Abstract: The external forcing caused by human activities is one of the key contributors to climate warming, and urbanization(external forcing of land use) is an important aspect of the external forcing of human activities.The research on the impact of urbanization on climate warming has made great progress in the past few decades both domestically and abroad, and therefore it is necessary to summarize the previous studies.This paper mainly includes five aspects, the main methods of selecting background stations in China and in abroad, the impact of urbanization on the temperatures of individual cities, regions, and the globe/hemisphere, the impact of urbanization on extreme temperatures, and the correction of urbanization impacts.Overall speaking, the impact of urbanization on temperature series on a single city and regional scale is very significant, while no consistent conclusion concerning the impact on the hemispheric and global scale temperature series has been drawn.Urbanization not only has impact on the average temperature at the city and regional scales, but also exhibits important impact on extreme temperature events related to the highest and lowest temperature at the city and regional scales.Reasonable correction of the urbanization impact on temperature changes is one of the important issues for the improvement of climate change monitoring, detection and prediction.There are a lot of researches on the temporal and spatial distribution characteristics of urban heat island effect and its influence on the trend of temperature changes, but no sufficient attention is paid to reasonable correction of the urbanization influence on the station temperature series.Moreover, the impact of urbanization is rarely considered when predicting future climate change.Many studies on regional climate warming have not considered the impact of urbanization, either.This will seriously underestimate the extent of future warming in cities or regions and overestimate the extent of regional historical temperature warming.Finally, the future research direction of urbanization affecting regional temperature is discussed.