中文摘要：

利用新疆地区南疆测网2015～2016年阿克陶地震发生前后共5期流动重力资料，以点线面的形式分别分析震中附近测点重力值时序变化、测线段差变化以及测区重力场变化特征。震前的重力观测结果表明，震中附近的乌恰至布伦口地区从2015年开始出现重力值逐步上升趋势，地震发生前半年该区域重力变化转变为下降趋势，并震前一段时间出现重力变化高梯度带。震后的重力观测结果显示，以布伦口为界，南北两侧的重力段差出现反向变化趋势，震中附近地区震前震后出现的重力场变化特征与该地区地质构造分布有较好的对应性。

英文摘要：

This paper analyzed gravity changes before and after Aktao earthquake in Xinjiang using 5 periods of gravity observation data from 2015 to 2016. The gravity observation result showed ：gravity increase trends appeared from 2015, and these changes transformed to descend trends six months before earthquake from Wuqia to Bulunkou. Meanwhile, there occurred gradient zone of gravity changes before earthquake. The gravity observation results after the earthquake showed：there were opposite gravity changes occurred in the northern and southern sides of Bulunkou, the characteristics of gravity changes before and after earthquakes had well correspondence to local geological structures.