沧13井数字化地热资料自2010年12月13日开始出现上升异常变化，之后在高值持续。针对该异常变化河北省地震局的领导和分析人员都非常重视，在排除环境因素无明显的变化外，通过一系列的分析方法，诸如地热与水位、气压相关资料的对比分析，地热变化与观测系统的电信号的相关分析，以及深入了解数据采集系统工作原理、调取分析存储的原始记录。综合分析认为，该地热异常变化不是地震前兆异常。

Digital geothermal data of Cang 13 well have appeared  abnormal changes since December 13, 2010, then rising in high value for long time。 Leadership and personnel for the analysis of seismological bureau pay attention to the abnormal changes seriously in  Seismological Bureau of Hebei Province. For the geothermal anomaly, we excluded no significant change of environmental factors, then through a series of analysis methods, such as contradistinctive analysis for geothermic and water level and air pressure, correlation analysis for geothermal changes and electric  electric signals of observation system, after understanding working principle of the data acquisition system, acquire and analyse the original records.By comprehensive analysis, we conclude that the geothermal anomaly of Cang 13 well is not seismic precursor .