Injection mold is one of the important technology and equipment, production of various industrial products with the rapid development of plastic industry, as well as plastic products in aviation, aerospace, electronics, machinery, shipbuilding and automobile industries, products is becoming more and more high to the requirement of the mould, the traditional mould design method has been unable to adapt to today's requirements. Compared with the traditional mould design, computer aided engineering (CAE) technology both in terms of improve productivity, ensure the quality of products, or in terms of reduce cost, reduce labor intensity, has great superiority.