【Objective】By analyzing the yield and agronomic traits alterations of foxtail millet cultivars tested in North China summer-sowing region from the latest 15 years, the change trend in millet breeding level was elucidated to provide references for the future development of foxtail millet cultivars.【Method】The main agronomic traits data of foxtail millet cultivars in North China summer-sowing region from 2001 to 2015 was used to reveal the changing rule of foxtail millet breeding. Correlation analysis between climatic factors and agronomic traits of foxtail millet cultivars tested from 2001 to 2015 was conducted. The types of foxtail millet cultivars were classified. 【Result】The agronomic traits of the cultivars altered significantly during 2001 to 2015. As time lapse, yield, growth duration, plant height, panicle length, panicle weight and panicle grain weight increased, while 1000-grain weight decreased slightly, and panicle numbers per hectare decreased. The change trend of the main agronomic traits of the 51 foxtail millet cultivars from year 2001 to 2015 was in accordance with all tested cultivars. Variance analysis showed that yield, growth duration, plant height, panicle length, 1000-grain weight and panicle numbers per hectare were significantly different among the 51 foxtail millet cultivars, while there was no significant difference in panicle weight, panicle grain weight and percentage of grain weight per panicle. The climate trend was warm and humid in North China summer-sowing region. The yield had a higher positive correlation with the growth duration, panicle weight and panicle grain weight, but had a higher negative correlation with the lowest temperature and precipitation. 85.17% of yield variation was determined by lowest temperature, highest temperature, precipitation, growth duration, panicle grain weight and percentage of grain weight per panicle. The lowest temperature had a negative effect on yield, while the highest temperature had a positive effect on yield. The foxtail millet breeding level was progressed from 2001 to 2015, and the types of foxtail millet cultivars were abundant with more herbicide resistance cultivars and high quality cultivars, showing that the main breeding direction was simplified cultivation and quality. However, there were 26 foxtail millet cultivars with the parental source of Jigu19, Yugu1 and Jigu25. The percent was up to 57.8%, showing that the parents used in millet breeding were in a narrow scope.【Conclusion】The yield of foxtail millet cultivars in North China summer-sowing region from 2001 to 2015 was increased somewhat, the types of foxtail millet cultivars were abundant, and the foxtail millet breeding level was progressed to some extent. However, the yield difference was mainly caused by weather fluctuation. In the future, the types of parent should be immensely enriched. And the types of millet cultivars with higher grain weight and higher percentage of grain weight per panicle should be cultivated for adapting climate change and improving yield.