The Rapid Prototype model, also known as the R.P., refers to the first or first batch of samples before the plastic mold is cut in the new product development stage. The Rapid Prototype is the first step to verify the viability of the product. It is the most direct and effective way to find the product design defects, so as to improve the defects until the model has no problems. Rapid prototyping technology, also known as additive manufacturing [1], it is a kind of digital model file as the basis, the use of powdered metal or plastic and other bondable materials, printed layer by layer Ways to construct the technology of objects.