In order to understand the effects of meteorological factors in southern Xinjiang on fruit quality of Jun jujube,this paper analyzed the temperature,amount of sunshine,rainfall,relative humidity and wind speed,etc.meteorological data from 2015-2016 in Akesu,Khotan and Korla 3 areas,and studied the function law of climate changes on fruit quality.It was found that climate conditions in southern Xinjiang had obvious effects on fruit quality of Jun Jujube,through comparison of 12 meteorological factors on single fruit weight,Vc and soluble sugar contents,etc.fruit qualities.The results showed that the key factors affecting Jun Jujube quality were average temperature,average maximum temperature,sunshine hours and precipitation.The contents of Vc and total soluble sugar were most significantly affected by average minimum temperature.