乌孙,汉代西域大国,其名始见于《史记·大宛列传》:“乌孙在大宛东北可二千里,行国,随畜,与匈奴同俗,控弦者数万,敢战。故服匈奴,及盛,取其羁属,不肯朝会焉。”至极盛时,有胜兵18万,人口63万,等于汉西域城郭诸国若羌、鄯善、莎车、疏勒、于阗、焉耆、龟兹等国人口的2倍。 乌孙不仅人口多,而且据地辽阔,占有今巴尔喀什湖以东以南、包括伊犁河流域和伊塞克湖一带广大地区。 Wusun, the Western Region of the Han Dynasty, its name first appeared in the “Historical Records Dawan Biography”: “Wusun can travel two thousand miles in the northeast of Dawan, with the livestock, with the Huns with the vulgar, control tens of thousands of people, dare to fight . Therefore serving the Huns, and Sheng, take their custody, refused to move towards Yan. ”To the heyday, there are 180,000 wins, a population of 630,000, equal to the Han Dynasty Guo Ruuo Guo Qiang, Shanshan, Shache, Shule , Twice as many as the population of Yuzhan, Yanqi, Quci and other countries. Wusun not only has a large population, but also vast areas, occupying the south of the present east of the Balkhash Lake, including the Ili River Basin and the vast area of ​​Lake Issyk Kul.