D19 is an exploration well in the geothermal clean energy survey and evaluation project in Xiong’an New Area. During drilling process， research and application of the various research and application on key technologies such as drilling process， drilling bit and drilling fluids are carried out， by whcih the drilling efficiency of deep geothermal is improved， the difficult problem of the complex strata drilling in the deep geothermal drilling of well D19 is solved， the target thermal reservoirs is protected， the drilling construction task is successfully completed， and the geological structure and heat storage characteristics are identified by well logging and pumping tests. In this paper， the key drilling technology and achievements of well D19 are summerized which can provides technical support for similar drilling projects and promote the development of deep geothermal drilling.