As the problem of increasingly resources consumption and waste generation, more and more people have realized the importance of machinery recycling, which is considered as a method to save resources, total costs and protect environment. On the concerns of recycling and optimizing machinery disposal process, we proposed a machinery recycle system based on reverse logistics, established a mixed integer mathematical model to achieve the goal, in which LINGO software is used to find optimal solutions. Used products contractor, as the decision maker, aims to minimize the total costs so that economic benefits can be obtained and a valid system can be presented. A real-life case study in Leshan City, Sichuan Province, China is introduced using the established model and arithmetic, successfully calculating results, achieving the goal. Moreover, a transportation ratio and collection ratio impacts are given to analyze the influence factors of the model, giving some suggestions are given to the decision makers. Comprehensive conclusions are depicted in the end. In this paper, the established MRS can validly solve the machinery recycle problem, which brings much values to the problems of mechanical industry. Further, through the analysis about the parameters, the total costs can be controlled flexibly.