Ceramic　stereolithography　(SLA)　was　used　to　fabricate　a　ceramic.　A　ceramic　3D　printer　based　on　the　SLA　method　was　manufactured.　In　order　to　systematically　and　effectively　evaluate　the　role　of　the　parameters　in　the　ceramic　green　body,　the　orthogonal　test　method　is　introduced.　The　placement　position　of　the　parts,　the　laser　repetition　frequency,　and　scanning　speed　are　used　as　independent　variables　to　be　studied.　The　final　result　shows　that　when　laser　power　is　set,　the　relationship　between　the　hardness　of　the　part　and　the　position　of　the　part　is　not　evident.　The　speed　of　laser　scanning　greatly　influences　the　mechanical　properties　of　the　parts.　Alumina　parts　with　smooth　surface　and　dense　microstructure　were　obtained　after　debinding　and　sintering　processes.　©　Published　under　licence　by　IOP　Publishing　Ltd.