Abstract: Under the influence of the rapid progress and development of social science and technology, the renewal speed of various market products has been accelerated, which has brought some challenges to the manufacture and R & D design of new products. If you want to complete the manufacturing of new products as quickly as possible, the key is to make product prototypes quickly. From the previous traditional prototype manufacturing methods, we can see that not only has a long manufacturing cycle, but also its cost is relatively high, which can not meet the actual needs of market development, so in such a situation background, Rapid prototyping technology has been eff ectively popularized and applied. Therefore, this article is aimed at fast The application of molding technology in integrated manufacturing and NC mechanical manufacturing is analyzed and discussed in detail for reference only.