The　development　of　additive　manufacturing　(AM)　technology　provides　higher　feasibility　for　designing　and　manufacturing　lattice　structures.　However,　the　manufacturing　process　usually　generates　residual　deformation　and　stress,　and　even　produces　cracking,　thus　affecting　the　performance　of　the　parts.　This　work　establishes　a　simulation　model　of　the　Ti-6Al-4V　lattice　structures　during　laser　powder　bed　fusion　(LPBF)　based　on　the　inherent　strain　method.　Effects　of　geometric　lattice　parameters　(inclination　angle,　rod　diameter,　rod　length)　on　the　residual　deformation　and　stress　are　analyzed.　Based　on　the　simulation　results,　measures　for　improving　the　quality　of　the　lattice　structures　are　proposed.　The　proposed　model　and　simulation　results　can　provide　theoretical　references　for　designing　and　manufacturing　the　lattice　structures　during　practical　engineering　applications　of　LPBF.