After the accident that water inrush from fault happened on August 17, 2010, the hydrogeological type of Tianzhuang Mine was identified as complexity, the prevention and control of the water needed to be improved. The supplement hydrogeological exploration was carried out, with 17 constructed hydrological well. The plentiful pumping and dewatering test data and its water chemistry data provided the study of the hydrogeological condition about the ordovician groundwater. Through comprehensively analyzing the groundwater flow field, hydrogeochemical field and the aquifer water, the hydrogeological feature of the ordovician groundwater was confirmed. Through analyzing the observation well data, the runoff characteristic in local scope and the direction of groundwater flow were settled, which provided  basis for the water control work and  scientific research related