Aiming at the problem that the product technology is backward and can’t be reused in remanufacturing, a modular reconfiguration design method for remanufacturing upgrade was proposed. In order to facilitate the disassembly, assembly and recycling of products, green modules of products was divided based on the design structure matrix, and the prototype system of remanufacturing module division platform was developed based on MATLAB, parts with the same recycling type was grouped into clusters to form new modules. For the modules with conflicts, the rationality analysis method of module division results was proposed due to the rationality criteria of function, structure and recycling and the product reconstruction design scheme was obtained taking the contradiction matrix of TRIZ theory to resolve conflicts. Finally, the validity and feasibility of the proposed method were verified by taking permanent magnet synchronous traction machine as the research object.