Hydroxyapatite　(HA)　bioceramic　scaffolds　were　fabricated　by　using　digital　light　processing　(DLP)　based　additive　manufacturing.Key　issues　on　the　HA　bioceramic　scaffolds,including　dispersion,DLP　fabrication,sintering,mechanical　properties,and　biocompatibility　were　discussed　in　detail.Firstly,the　effects　of　dispersant　dosage,solid　loading,and　sintering　temperature　were　studied.The　optimal　dispersant　dosage,solid　loading,and　sintering　temperature　were　2　wt％,50　vol％,and　1250　℃,respectively.Then,the　mechanical　properties　and　biocompatibility　of　the　HA　bioceramic　scaffolds　were　investigated.The　DLP-prepared　porous　HA　bioceramic　scaffold　was　found　to　exhibit　excellent　mechanical　properties　and　degradation　behavior.From　this　study,DLP　technique　shows　good　potential　for　manufacturing　HA　bioceramic　scaffolds.