Abstract
In this report, the mechanical design efficiency improvement by digital engineering is described. Basically, the process reform that consists of a front loading, a concurrent engineering, and an arrangement of task and authority is practiced. The organic coupling with information related to the use of not the conversion of a simple tool but three dimension CAD data, three dimension CAD data, and the product development is needed. In the indent product, it is valued to apply the measure to the product. In the consumer product, it is valued to apply the measure to the process.