In　order　to　further　explore　the　realization　method　of　3D　printing,　and　to　get　a　promotion　in　the　precision　and　efficiency,　based　on　the　structure　of　the　plotter,　combined　with　the　stereolithography　(SLA)　technology,　a　new　stereolithography　plotter　(SLP)　design　was　presented　for　3D　printing　with　photosensitive　resin.　Its　movement　structure　was　similar　with　the　plotter,　and　laser　focus　part　did　xy　two-dimensional　motion　directly.　Its　focus　length　was　much　shorter　than　that　of　SLA,　so　its　power　requirement　of　light　source　was　lower.　Compared　to　the　SLA　and　digital　light　processing　(DLP),　its　work　field　can　be　extended　more　easily.　©　2015,　Beijing　University　of　Technology.　All　right　reserved.