Abstract: To study the air temperature change patterns in urban Shanghai against the background of global climate change and how urbanization affects them,the responses of the urban Shanghai temperature to global warming are analyzed first,and the trends of temperature variation are then compared between the urban and suburb stations to determine the urban temperature response to urbanization in Shanghai.Thirdly,the relationships between urbanization variables and long-term temperature components are obtained.Fourthly,surface and high-level observations of temperature are combined to make quantitative assessment of the contribution of urbanization effects to mean temperature.For the last part,the cause of urbanization effects on temperature is discussed.The results indicate that the long-term change trend of Shanghai annual mean temperature is 1.31℃/(100 a) from 1873 to 2004,and the periods of 1921～1948 and 1979～2004 are warmer,with the latter having a larger increase than the former one;compared with the suburb stations,the urban stations have slower decrease of temperature in cooling periods and faster increase in warming periods;resulting from urbanization,the urban and suburb temperature has distinct differences,which are increasing by the year;the differences of mean temperature and minimum temperature are the greatest in fall and those of maximum temperature are the largest in summer;the urbanization process accelerates the warming rate,among which the minimum temperature is the most obvious;on average,the urbanization effects account for an average increase of 0.4℃ in the 1980s and 1.1℃ in the 1990s.