Abstract:Accurate reconstruction of prototype and redesign based on prototype is one of the application goals of reverse engineering. In manufacture industry, because of many kinds of facts, such as, manufacturing errors, measuring errors and three-dimensional fitting precision, and so on, there was obvious gap between prototype parameter and manufacturing data that was formed based on objective prototype reconstruction, in some cases, the product to be reversed lost its using performance. Aimed at this problem, it puts forward that there is a parameter system that includes the objective prototype parameters, reconstruction parameters and original design parameters in the reverse engineering, and expounds that the different parameters must be obtained according to the different demands in a different situation. It proposed that the reverse engineering used in manufacture industry should find reversely the original design parameters that are foundation of making objective prototype, and should use it as the basis of making new products. The analysis result has great significance to strengthen the application of reverse engineering in the manufacturing industry, and highlight the “innovation” function of reverse engineering.