The preparation of Ti and TiC has garnered significant global attention, with a novel reduction method involving CH4 demonstrating a sustainable competitive advantage. This paper focuses on a novel synthesis method for TiO2 under a CH4-H2 atmosphere, investigating the reduction thermodynamic behavior, phase equilibrium, and energy consumption of TiO2 using a CH4-H2 gas mixture. The results indicate that the reaction sequence follows a step-by-step reduction from TiO2 to Ti(C, O), with the Magnéli phase and Ti3O5 serving as intermediate phases. The reduction of TiO2 with H2 is more challenging compared to its reduction with CH4. The total energy required for the complete carbonization of 1 mol of TiO2 at 1000 °C, 1100 °C, and 1200 °C is 1159 kJ/mol, 925 kJ/mol, and 977 kJ/mol, respectively.