Abstract:Based on the former hydrogeological datas, combining with hydrogeology survey, geophysical exploration, comprehensive analysis, hydrogeological conditions in Yantai city have been analyzed. According to aquifer lithology and groundwater unconsolidated rock pore water rock groups, the study area is divided into clastic rock pore fissure waterbearing rock, carbonate rock karst waterbearing rock group, extrusive rock hole fissure waterbearing rock and magmatic rock, metamorphic rock fissure waterbearing rock group. According to differences on topography and lithology structures, the study area is divided into hilly mountain and coastal plain. Groundwater recharge, runoff and discharge conditions have been described respectively. Electrical characteristics of waterbearing rock group is associated with the occurrence of medium of groundwater. According to different mediums, groundwater types can be divided into pore water, fissure water and karst water, and its electrical characteristics have been summarized respectively. Water bearing rock groups have been divided and different aquifer electrical characteristics have bee summarized. It will provide a scientific basis for further development and utilization of water resources.