通过分析庐江汤池1号井水氡观测资料影响因素、异常变化特征及异常对应的典型震例，研究水氡异常与地震活动的关系。分析认为，该井点映震效果较好，观测以来有近震前兆异常，特别是远大震震后明显，水氡映震具有一定的方向性，特别是对井点东南部地区有一定映震能力。

The article analysis water radon factors and variation of radon characteristics of Tangchi NO.1 well in Lujiang.It researches radon anomaly corresponding typical earthquake example and study on the relationship between water radon anomalies and seismic activity .The results show that this well of earthquake-reflecting effect is good. The near earthquake observation had abnormal precursory since observation. Especially, far strong earthquake had obvious post-seismic effect . Water radon earthquake-reflecting has certain direction.The well has certain earthquake-reflecting capacity on Southeast region.