Abstract: In order to obtain accurate hydrogeological parameters, to provide reliable data for prevention and control of mine water, mine water inflow calculation and evaluation of groundwater, based on the artificial well fluid resistivity well logging results of hydrological borehole in coal geological exploration, combined with the data of fine drilling core description, pumping test, the conventional geophysical well logging data and so on, related data were analyzed comprehensively. The results showed that technology of artificial drilling fluid resistivity well logging has obvious advantages in dividing the nature of the aquifer and aquiclude, determining the position of the aquifer, analyzing the recharge relationship between the aquifers, checking the borehole water effect, calculating borehole cross section flow of each aquifer, evaluating the quality parameters of groundwater, researching the flow direction and velocity of groundwater, monitoring the high of fractured zone in productive mine. So, through comprehensive analysis of the related data, maximum use of hydrogeological exploration information was achieved, the quality of exploration results was improved so as to better serve mine design, construction and mine production, ensuring safe mining.