Ceramic slurry of 78 mass% solid loading was prepared using photosensitive acrylic resin and dispersant SP-710 as the liquid phase, Al2O3 powder (d50=2.38 μm) and TiO2 powder additive as the solid phase. Alumina ceramics were prepared by DLP, sintering for 4 h at 1 450, 1 500, 1 550 or 1 600 ℃, respectively. The effects of the TiO2 addition (0, 1%, 2%, 3% and 5%, by mass) on the properties of the ceramics were studied. The results show that the addition of TiO2 can improve the sintering of Al2O3 ceramics, significantly improve the densification, and reduce the sintering temperature. With the optimum TiO2 addition of 3% and the optimum sintering temperature of 1 600 ℃, the obtained Al2O3 ceramics have shrinkage of 15.7%, 15.8% and 23.8% at the x axis, the y axis, and the z axis, respectively, the porosity of 2.4%, the bulk density of 3.74 g·cm-3 and the three point bending strength of 251.1 MPa. Compared with the undoped alumina ceramics, the doped alumina ceramic has increased bulk density by 0.56 g·cm-3, decreased apparent porosity from 20.2% to 2.4%, and the three-point bending strength increases by 2.5 times. Therefore, the density and the strength of DLP prepared ceramics can be improved effectively by adding an appropriate amount of TiO2, and the performance of the DLP prepared ceramics is close to that of the pressed samples. Thus, it is hopeful to apply DLP in refractories field.