The　green　remanufacturing　constitutes　a　type　of　recycling　form　that　adapts　to　ecological　and　economic　requirements　and　an　important　part　of　the　advanced　manufacturing　technology.　In　order　to　improve　the　green　remanufacturing　capacity　of　heavy-duty　machine　tools,　in　this　paper　a　heavy-duty　machine　tool　module　division　method　for　green　remanufacturing　was　proposed.　The　main　lines　were　based　on　the　four　design　domains　of　axiomatic　design　and　innovatively　extended　to　the　remanufacturing　domain.　In　the　design　stage,　the　process　of　remanufacturing　was　considered.　The　modular　clustering　algorithm　based　on　atomic　theory　was　employed,　which　was　associated　with　the　correlation　and　similarity　between　the　design　parameters　in　the　structure　domain　and　the　remanufacturing　domain,　for　the　ideal　modules　of　heavy-duty　machine　tools　to　be　discovered.　Finally,　a　heavy-duty　gantry　milling　machine　is　used　as　an　example　to　verify　the　validity　of　the　proposed　method.