Geothermal energy is a clean and renewable mineral resource, green environmental protection energy and tourism resources. The comprehensive nature of geothermal aquifer， the characteristics of construction formation and the complex conditions of construction area have different requirements for geothermal well completion technology. Based on the geothermal blank area and sandstone thermal reservoir formation of Baotou in Inner Mongolia, analysis and study were made on equipment selection, well structure and well completion technology; and the evaluation was made on single well geothermal resources to provide guidance and reference to the further geothermal resources exploration and development in the local and other similar areas.