Abstract: Through processing the 15 year's observational data of groundwater level in Jin Second Well,a kind of scalariform anomaly is extracted,and its anomaly standard is made.From the scalariform frequency,the medium and short term precursory anomalies corresponding to over moderately strong earthquakes around are picked up.The R-test shows that the scalariform and scalariform group anomalies are corresponding well to the medium and strong earthquake around.Three over moderately strong earthquakes around Jin Second Well were predicted with this kind anomaly.