Abstract: Using the hourly precipitation data of 103 stations in Kizilsu Kirgiz Autonomous Prefecture in warm season（April-October） from 2014 to 2021,the spatio-temporal distribution characteristics of hourly extreme precipitation were analyzed.The results show that:（1）The warm season precipitation in Kezhou is less in the south and more in the north,less in plains and more in mountainous areas,and smaller in high-altitude mountainous areas of the southwest; the high-value areas of hourly precipitation frequency are concentrated in the northeast,west and southern high-altitude areas（all above 50 times/a）;the stations with hourly mean precipitation intensity ≥ 10 mm/h are mainly located in the north,and the hourly precipitation intensity in the plains is higher than that in the western and southwestern mountainous areas.（2）There are obvious local differences in hourly extreme precipitation threshold,intensity,frequency and contribution rate in Kezhou warm season（April-October）.（3）The high value period of hourly extreme precipitation frequency is from 18:00 to 21:00,and the low value period is from 13:00 to 16:00; the precipitation intensity is greater in the early morning and 20:00 to 22:00,smaller in 12:00-13:00.（4）There are differences in the hourly extreme precipitation indicators in three types of regions with different altitude gradients:mountainous areas,shallow mountainous areas,and plains.Among them,the plains（areas below 2 000 m） have the highest precipitation intensity and the lowest frequency;high-altitude mountainous areas（areas above3 000 m）have the lowest precipitation intensity and the highest frequency.