Abstract: The changes of cultivated land area, sown area of main crops and red jujube in Ruoqiang county of Xinjiang from 1978 to 2017 were analyzed using land use dynamic degree model. The results showed that, in resent 40a, the area change of cultivated land in Ruoqiang county was the overall expansion of the trend. Since 2001, red jujube area of Ruoqiang county increased rapidly, because of Ruoqiang county took the income of farmers and herdsmen greatly increase as a breakthrough, intensified strategic adjustment of agricultural industry structure, with the construction of the best red jujube base in China as the goal. Because the new cultivated land in Ruoqiang county has adopted the interplanting mode,by planting cotton and grain crops and then cultivating red jujube,so the sown area of cotton, wheat, maize and other crops showed a trend of substantial increase and then decrease.

Key words: cultivated land, main crops, change of area, Ruoqiang county