应用ATG6118H痕量氢分析仪在山西夏县台开展了试验测试，记录到比较翔实的观测数据。根据观测数据结果分析，地震前观测到断层氢气的异常特征是高值突跳，异常幅度大、时间短。本文对2012年3月-11月痕量氢观测的背景值突变现象进行了重点分析,对观测资料的进一步使用奠定了基础,为新型仪器观测提供一些事实依据。

Special test for trace hydrogen is made at Xianxian seismological station, Shanxi, by using analysis instrument of type ATG6118H and rather informative observation data are recorded. The results of oberservational data shows some obnormal characteristic of fault hydrogen observed. Before earthquakes, trace hydrogen amount goes up greatly in short time. The background data change greatly phenomenon of trace hydrogen oberservation  is analyzed selectively in this paper from March to November in 2012, Which laid the foundation for the observational data and provides some real evidences for new observation instrument.