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选用华东及周围地区157个气象观测站1960-2005年6～8月逐日最高、最低气温资料,利用分段线性突变检验、 EOF分解等方法,分析了我国华东地区最高、最低气温的空间分布及时间演变特征.结果表明:高温主要出现在长江以南;长江以北夏季气温分布受地形影响显著.最高气温分布具有良好的空间一致性,主要受大尺度天气系统影响;最低气温更多表现出局地变化特征;华东夏季最高、 最低气温分布形态较为类似,有“全区一致型”和“南北反向型”两种,1980年是夏季气温的一个突变点.1980年以前,最高、 最低气温都呈下降趋势;1980年以后则呈升温趋势;最高气温的演变以“高温-低温-高温”的年代际振荡为主,极端高温主要发生在两个时段:第一次在1960-1965年之间;第二次在2000年以后,而极端最低气温以升温趋势为主.“,”Spatial and temporal variations of maximum and minimum surface air temperatures in East China and its surroundings is studied using the daily data at 157 weather stations for a period of 1960-2005. The results show that the high maximum temperature existed in the South of Changjiang River,the distribution in its north is mainly influenced by the terrain. The spatial distribution of maximum temperature is controlled by the large scale system,such as the sub-tropical high. While spatial distribution of the minimum temperature was characterized by local changes. In terms of temporal variations,there is a breakpoint in 1980;i.e.,both maximum and minimum temperatures show a decreasing trend before 1980 and an increasing trend after 1980. The highest maximum temperature over the past 46 years occurred in 1960-1965 and 2000-2005,while minimum temperature was more linearly increased.