The macro anomalies,such as rise of groundwater level,re-gushing of several dry-up springs have occurred in Xingtai city,Hebei Province since September 2018. The field investigations were conducted in three times in order to determine whether such anomalies are related to regional tectonic activity or change of underground stress. We collected 3 samples from irrigation well water and 6 samples from surface water. Hydrochemical ion concentration and isotopic ratios of the samples were analyzed. The results are as follows:① samples from 3 irrigation wells show the similar supply source and a certain hydraulic connection with ground water;② the enrichment of SO₄^2- in water is caused by the richness of coal resources and human activity. We conclude that the anomaly phenomena probably were caused by ecological water supplement project based on ecological water supplement data before occurrence of anomalies,and no evidence was found to support the correlation between the cause of anomalies and regional tectonic activity or change of underground stress. Consequently,the possibility of seismic macro precursor anomaly is eliminated.