Aiming at the problems of residual anode and free carbon generated in titanium oxycarbide electrolysis (TiC 0.5 O 0.5 ), the phase composition and microstructure of TiC 0.5 O 0.5 were characterized by XRD, SEM, EDS and POM. The results show that: titanium oxycarbide (TiC 0.5 O 0.5 ) with similar crystal morphology and structure could be obtained by carbothermic reduction from TiO 2 and sintering from TiC and TiO, which is composed of 15 21% gray-white titanium carbide, 56 69% yellow titanium oxycarbide and 13 25% aubergine titanium oxycarbide. The grain color of titanium oxycarbide is related to the content of carbon and oxygen. Gray-white titanium carbide contains 20 30% C, yellow titanium oxycarbide 10 50% C and 10 20% O, and aubergine titanium oxycarbide 5 10%C and 25 30% O. The structure of titanium oxycarbide is not uniformity, which results in the formation of residual anode and carbon. The gray-white and aubergine components in titanium oxycarbide are rich in TiC and TiO respectively, which generate free C, CO 2 , Ti 2 O 3 and TiO 2 after electrolysis.