The torque impactor can convert the kinetic energy of drilling fluid into high-frequency circumferential kinetic energy of the lower drilling tool， thereby eliminating stick-slip vibration， protecting PDC drill bits， and improving construction efficiency. During the construction of two geothermal wells in Baise， Guangxi and Bijie， Guizhou， due to the influence of soft and hard interlayers， the stick-slip vibration effect was strong， causing the composite pieces of PDC drill bits to quickly collapse and the drill bits to be scrapped in advance. A composite drilling process of torque impactor + screw drilling tool is used. By reasonably designing the drilling tool combination and drilling parameters， compared with the simple screw drilling process， due to the effective control of stick-slip vibration， the phenomenon of tooth collapse of the drill bit composite piece is significantly reduced， the service life is increased， and the average mechanical drilling speed is increased by more than twice， Overall construction efficiency and economic benefits has been improved. It provides a new solution for the construction of formations prone to stick-slip effects such as soft and hard interlayers.