Abstract: For the geometric errors generated during the manufacturing and assembly of numerical control power skiving machine tool, a system for automatically generating geometric location error compensation code is developed. Firstly, based on the principles of gear power skiving and the homogeneous coordinate transformation to establish the kinematic chain of machine tool, and the skiving forming function is obtained. Then, the forming function is solved by the actual inverse kinematics error compensation method. Finally, functional modules of software were analyzed, using Qt cross-platform development framework to design interface, using C++ write program, and developing an geometric location errors compensation system for power skiving. The system can realize the calculation of tool parameters, workpiece parameters and the automatic generation of G code for geometric location errors compensation. Through VERICUT simulation processing, the correctness of the system is verified. The results show that the gear accuracy after compensation is improved. The development of this system provides a theoretical and practical basis for realizing the automatic compensation of geometric errors.