西安台地电阻率自唐山地震后的1976年7月到1977年元月出现了一个大幅度下降的负异常。对这样大的电阻率变化,究竟是反映了地下区域构造应力场的作用,还是由于外界干扰因素影响而产生的非地震信息,人们一直存在着不同看法。本文试图从西安地区大量抽水造成地下水位大幅度下降和地面不断沉降的 Xi’an terrestrial resistivity since the Tangshan earthquake in July 1976 to January 1977 showed a sharp decline in negative anomalies. Whether such large resistivity changes reflect the tectonic stress field in the subsurface region or the non-seismic information due to the influence of external disturbances, people always have different opinions. This paper attempts to draw a lot of water from Xi’an caused by the groundwater level dropped significantly and the ground continued to settle