In order to win the battle of preventing and controlling air pollution， fulfil the task of replacing coal burning， the Pingdingshan Municipal Party Committee and Government entrusted Henan provincial Non-ferrous Metals Geological Mineral Resources Bureau to organize the geothermal exploration and development in Pingdingshan area. According to the regional geological conditions and stratigraphic characteristics， Henan Provincial Non-ferrous Metals Geological Mineral Resources Bureau designed and organized the construction of well PBR01 in north Pingdingshan geothermal demonstration area. This paper introduces the whole process of the project designing and constructing from the aspects of drilling equipment selection， construction technology selection and drilling fluid configuration. Through drilling construction， the problem of large-diameter deep hole drilling in this area has been solved， which has played a good demonstration role for the subsequent development and application in this area. Through the analysis of the drilling time curve， the drilling efficiency of different areas in this region is understood， and the scheme to improve the large diameter drilling efficiency in hard rocks is put forward.