Aimed at the complex of the turning and milling compound IT100 machine tool, the procedure is tedious, the knife shaft movement is flexible. In the actual machining process difficult to procedures to determine the correctness, and if the cutter shaft is collision and interference problems with parts, a workbench, and a clamp. Firstly, according to the measured dimensions of each component of the machine tool in the UG software, the model was introduced into the VERICUT software, and the virtual simulation machine tool is built according to the relative motion relationship of each component. In this virtual machine simulation of inducer for machining simulation，finally, the in turning and milling compound IT100 inducer of the actual processing，the correctness and practicability of the simulation were verified. And some experience for other multi-axis linkage computer numbercial control (CNC) machine tool of CNC simulation is provided.