By using the mathematical statistics method, the variation characteristics of average maximum temperature, the number of high temperature day as well as the duration of high temperature occurrence were analyzed according to the maximum temperature data during 1960 ~ 2010 provided by Puyang Weather Station. The results indicated that the changes of the average maximum temperature showed a rising - decline - rising trend, and its abrupt changes took place in the years 1976 and 1983. The changes of the number of high temperature day revealed an increase - decrease - increase trend, without evident abrupt change. High temperature day occurred from May to September, most frequently in July (48.5% ) and secondly in August (40.8% ). The high temperature duration in Puyang city underwent a long - short - long change, and it was the shortest in the early 1980s.%采用数理统计方法,分析了1960 ～2010年濮阳所辖各站的平均最高气温、最高气温日数和高温出现初终日的变化特征.分析结果显示:濮阳市51年来平均最高气温呈现“上升-下降-上升”的趋势,并且平均最高气温在1976和1983年附近发生了突变.濮阳高温日数也呈现“增多-减少-增多”的趋势,但累计高温日数没有很明显的突变；高温日5～9月都有出现,其中7月高温日出现最多,占48.5％,8月次之,占40.8％.濮阳市高温持续的时间经历了由长变短再变长的过程,20世纪80年代初最短.
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