摘要
The groundwater in south Guizhou mainly is karst water,the bedrock hardly imposed in the water-deficient area,the overburden layer of surface is thick,The application of geophysical method can ensure the best position drilling.By geophysical water researching and well positioning in south Guizhou,on the basis of successful drill testification,resistivity combined profile method and five poles direct current electric sounding,which are the best geophysical method in this area are summarized,the advantages of ratio method in data processing is studied.