3DSMAX　powerful　modeling,　animation　function　is　known,　But　the　application　of　MAXScript　is　relatively　little.　In　this　paper,　the　assembly　system　of　machine　tool　is　made　by　MAXScript　language.　Add.　NET　component　and　connect　SQL　2008　database,　Rich　UI　design　and　Realization　of　assembly　parts　model　data　added,　deleted,　changed,　checked.　By　importing　the　dynamic　link　library　file　(.DLL)　written　in　C#　language,　the　assembly　sequence　card　is　generated,　which　can　guide　the　actual　assembly.　Although　this　design　has　many　shortcomings　to　improve　and　perfect,　but　it　enriches　and　expands　the　virtual　assembly　technology.