The　metal　droplets　deposition　method　(MDDM)　is　a　rapid　prototyping　technology,implemented　via　metallurgy　bonding　within　droplets.The　anisotropy　of　heat　transfer　and　re-melting　is　caused　by　an　asymmetric　deposition　process.A　lattice　Boltzmann　method　(LBM)　model　is　established　to　predict　the　heat　transfer　and　phase　change　in　the　multi-layer　deposition.The　prediction　model　is　verified　by　the　experimental　temperature　profiles　in　existing　literature.The　monitoring　points　are　set　to　compare　the　temperature　profiles,and　decoupling　analyze　the　heat　transfer　mechanism　in　different　positions.The　negative　relationships　between　the　re-molten　volume　of　the　temperature　difference,as　well　as　the　influence　of　the　dispositive　position　and　the　relative　position　of　the　adjacent　component　are　observed　and　analyzed　under　the　heat　conduction.This　work　is　helpful　to　choose　the　appropriate　temperature　conditions　and　the　optimal　dispositive　method.