Abstract: In order to improve the parameters’ accuracy and speed in dewatering test,based on the similarity of hydrogeological parameters’ calculation in pumping test and dewatering test at coalbed floor, Aquifer Test software that used usually in pumping test was applied in one dewatering test at coalbed floor carried out in a colliery of Ningdong county. Through Theis fitting curve, Cooper-Jacob linear graphic and Theis recovery, hydraulic conductivity K and storage coefficient μ*were calculated and compared between Aquifer test and traditional handwork. Results showed that there was a slight difference of the results between two ways, but the results from handwork were relatively discrete. By contrast, due the Aquifer Test incorporated the advantages of hand fitting and computer fitting, led to a more precise result. Meanwhile, the software is more convenient in operation, simultaneous and time-saving in calculation and it’s worth to be promoted and applied in the hydrogeological parameters’ calculation of dewatering test at coalbed floor, especially in which there are many observation boreholes.