Based on the principle of material incress manufacturing, a new idea of the die's construction manufactured by sheet metal layer for layer through gluing is presented, and a CAD approach of the die's three-dimensional surface creating and the scattering handling is discussed in this paper. It is also analysised that layer's separation of the three-dimensional CAD model, change and transmission of separating layer's data, and mechanical properties of die's construction manufactured by sheet metal layer for layer through gluing. The results of the research indicate that die's manufacturing by sheet metal layer for layer through gluing is feasible and effective one of material incress manufacturing technical.