从甲烷的来源及其化学特征入手 ,结合 19年来的震例 ,分析了乌鲁木齐 10号泉水中溶解气甲烷的映震特征。结果表明 ,震前甲烷含量基本上呈正异常 ,一般在甲烷含量由高值变低时发震 ,个别地震在甲烷测值上升的过程中或恢复至背景值后数天至数十天发震。最后 ,初步认定了特殊的地震构造环境是该泉具有映震灵敏性的原因。 Starting from the source of methane and its chemical characteristics, combined with 19 years of earthquake cases, the analysis of the seepage characteristics of methane dissolved in the spring of Urumqi No. 10. The results show that the methane content before the earthquake is basically positive anomaly, generally when the methane content decreases from a high value to a low value. Some earthquakes may occur within days to tens of days after the methane measurement rises or after the background value is restored. Finally, it is preliminarily confirmed that the special seismotectonic environment is the reason why the spring has the seismic sensitivity.