In　this　paper,　in　order　to　improve　the　green　remanufacturing　capacity　of　heavy　duty　machine　tools,　the　design　domain　of　axiomatic　design　is　taken　as　the　main　line　and　extended　it　to　the　regeneration　domain　innovatively.　The　design　structure　matrix　is　used　to　consider　the　correlation　and　similarity　of　design　parameters　between　structural　domain　and　regeneration　domain.　The　particle　swarm　optimization　algorithm　based　on　the　minimal　description　length　is　used　to　find　the　ideal　modular　design　method　for　heavy　machine　tools.