Purpose　This　paper　aims　to　investigate　the　influence　of　droplet　infiltration　and　sliding　on　the　deposition　size　and　make　a　uniform　deposition　by　controlling　the　interaction　between　droplets,　using　the　three-dimensional　lattice　Boltzmann　method　(LBM)　based　on　the　actual　working　condition.　Design/methodology/approach　D3Q19　Shan-Chen　LB　approach　is　developed　and　optimized　based　on　the　metal　droplet　deposition.　The　Carnahan-Starling　equation　of　state　and　transition　layers　are　introduced　to　maintain　the　greater　stability　and　low　pseudo　velocities.　In　addition,　an　additional　collision　term　is　adopted　to　implement　immersed　moving　boundary　scheme　to　deal　with　no-slip　boundaries　on　the　front　of　the　phase　change.　Findings　The　numerical　results　show　that　the　new　not　sign　incoming　droplet　wet　and　slide　off　the　solidified　surface　and　the　rejection　between　droplets　are　the　reasons　for　the　deviation　of　the　actual　deposition　length.　The　total　length　of　the　longitudinal　section　negatively　correlates　with　the　deposition　distance.　To　improve　the　dimensional　accuracy,　the　deposition　distance　and　repulsion　rate　need　to　be　guaranteed.　The　optimal　deposition　distance　is　found　to　have　a　negative　linear　correlation　with　wettability.　Originality/value　The　numerical　model　developed　in　this　paper　will　help　predict　the　continuous　metal　droplet　deposition　and　provide　guidance　for　the　selection　of　deposition　distance.