CAD/CAE/CAM technology has become the core technology to develop the new generation of production technology, and it developes in the direction for integration. In order to realize integrated application of CAD/CAE/CAM software system, methods of the integration of CAD/CAE/CAM software were realized based on using technology of redevelopment of UG on software platform, including adding startup menu of CAE software into the interface of UG software, and configuring the interface NXV between UG and VERICUT together with its application. Physical integration and information integration of software were realized. Namely, CAE software was launched in UG interface, and data was achieved to transfer between software of UG and VERICUT. In integrated software system, different software were combined together organically. Control program is executed uniformly and fluent information transfer is guaranteed, which improve work efficiency of the technician and production benefit of the enterprise.