计算云南下关井水位和水温资料的相关性。结果表明，水位和水温的趋势性变化总体上具有很好的相关性和同步性。但在某些时间段内两者的相关性会发生显著变化，且与下关及附近地区中强以上地震对应较好，可能是一种地震前兆异常。研究水位、水温相关性变化比单一分析水位或水温动态能够获得更多的信息。

 Correlation between water level and water temperature in Xiaguan well in Yunnan is calculated. The results show that, the trend change of water level and water temperature with good correlation and synchronization. But the correlation in certain period will change significantly, it correspond well with mid-strong earthquake happened in Xiaguan and nearby areas, it may be a kind of earthquake precursory anomaly. Compared with single analysis of water level or water temperature dynamic, studying on correlation between water level and water temperature to be able to obtain more information.