As an important part of the computer information technology, computer-aided design and manufacturing (CAD/CAM) is a pivotal technology to realize manufacturing automation and to promote the technical progress of enterprises and to enhance technical innovative ability and the competitive ability of enterprise. At present, the development and application of CAD/CAM has become a crucial symbol of the technological and industrial modernization of a country. CAD/CAM is an epoch-making reform for traditional manufacturing. Mold is one of the industries that can exert the most benefit of CAD/CAM. Mold CAD/CAM is a crucial technology for traditional manufacturing. It is the system engineering with high-tech and high efficiency. It provides an effective auxiliary tool for enterprise. The engineers can improve product performance, mold structure, manufacturing technology and CNC machining and production procedure with the help of computer. It has become the consensus of the mold industry that mold CAD/CAM can shorten the manufacturing cycle, reduce production costs and improve product quality.