Herein　a　novel　method　was　proposed　for　the　fabrication　of　ceramic　membranes　by　digital　light　processing　(DLP)　three-dimensional　(3D)　printing.　The　UV-curable　alumina　suspension　was　optimized　by　tuning　the　solid　content,　grading　ratio,　and　temperature　to　achieve　low　viscosity.　The　Krieger-Dougherty　model　and　the　Vogel-FulcherTammann　equation　were　employed　to　describe　and　predict　the　changing　trends　of　viscosity.　The　effects　of　the　sintering　process　on　the　microstructures,　mechanical　strength,　and　permeability　of　the　ceramic　membranes　were　also　studied.　Under　the　optimized　conditions,　ceramic　membranes　were　obtained　with　uniform　pore　size　distribution,　high　porosity　of　42.6%,　an　average　pore　size　of　0.9　mu　m,　and　a　pure　water　flux　of　2.66　m3　m-2　h-1　bar-1.　Therefore,　DLP　3D　printing　demonstrates　good　prospects　for　application　in　the　fabrication　of　ceramic　membranes.