By the practice of Qiansuidi well1 drilling engineering, from the well structure, coring process, wall plugging technology, wellbore quality control and other aspects, the construction technologies of shale gas basic geologic survey well in south karst area are analyzed and summarized, and based on the geological record of borehole core of Qiansuidi well1, gas logging while drilling, organic geochemistry and water immersion test, the analysis and summarization are carried out on the stratum structure and gas bearing characteristics of shale gas in Suiyang area of north Guizhou to provide the geological basis for the exploration and development of shale gas in this area.