The　solidification　structure　of　Ti-6Al-4V　round　ingot　during　the　electron　beam　cold　hearth　melting　(EBCHM)　directly　determines　the　quality　of　the　ingot　and　the　performance　of　the　subsequent　rolled　coil.　In　this　paper,　the　Cellular　Automaton　Finite　Element　(CAFE)　method　is　used　to　numerically　simulate　the　solidification　structure　of　Ti-6Al-4V　ingot.　Firstly,　the　mathematical　model　is　established　with　a　numerical　solution.　Secondly,　effects　of　process　parameters　including　the　pouring　temperature　and　pulling　speed　on　the　solidification　structure　are　revealed.　The　results　show　that　the　microstructures　predicted　by　the　numerical　method　match　the　experimental　results.　For　the　case　of　fixed　pulling　speed,　a　reduction　in　the　pouring　temperature　leads　to　the　grain　refinement　and　the　decreased　volatilization　of　Al.　With　an　increase　of　the　pulling　speed,　the　number　of　grains　first　increases　and　then　decreases,　but　the　average　grain　size　first　decreases　and　then　increases.　Furthermore,　the　maximum　grain　size　monotonically　increases　with　increasing　the　pulling　speed.　Thus,　the　fine　solidified　structure　with　fine　grains　can　be　obtained　at　the　pouring　temperature　of　1700　degrees　C　and　the　pulling　speed　of　4　x　10(-4　)m　s(-1).