To tackle the problem that the extraction of the curved trajectory is difficult and the operation is complex in manual teaching, this paper uses the way that Visual Studio makes the secondary exploitation for the SolidWorks software to make the off-line programming of the curved surface of robot, and loads it automatically into SolidWorks in the form of DLL plug-in. By using UV parametric curved surface, the system realizes the rapid extraction of off-line trajectory and the generation of robot control code and finally implements the motion simulation of the robot with the model of the robot showed by DH parameter by means of traversing the joint angle. Practice has proven that the control code generated by the off-line programming can be directly downloaded to the robot controller which reaches the expected effect. Such a system is of great significance in the actual development and application of the industrial situations and domestic small and medium-sized enterprises for the rapid machining various parts.