Abstract: In this paper, we try to solve the problem that it is difficult to obtain the grinding blanking trajectory of the cockpit canopy complex surface robot by using the off-line programming technology of the robot. The method of using Tecnomatix PS to assist the off-line programming of the robot is emphatically introduced. Firstly, SolidWorks three-dimensional modeling technology is used to establish the machine working condition model to simulate the working environment of the grinding robot. At the same time, combined with Tecnomatix PS virtual simulation technology, the off-line programming and Simulation of the grinding robot are realized. Finally, the off-line program is obtained. Programming based on Tecnomatix PS is a part of the overall off-line programming method. Through verification, the output results can meet the needs of subsequent programming steps.