IMI 834 titanium alloy is a near-alpha titanium alloy known for its excellent comprehensive properties. It serves as a high-temperature titanium alloy capable of withstanding temperatures between 550 ℃ and 600 ℃,making it suitable for use in aeroengines and offering broad application prospects in the aerospace field. However, owing to its narrow α+β two-phase region, the IMI 834 alloy has a limited forging process window, which results in a high sensitivity of its microstructure and properties to the forging parameters. Nevertheless, systematic studies on the evolution mechanisms of the microstructure and texture of IMI 834 alloys during high-temperature deformation are still lacking. Therefore, the evolution of the microstructure and texture of IMI 834 titanium alloys was systematically investigated at different deformation temperatures (990, 1 000 and 1 010 ℃ )through finite element simulations combined with isothermal unidirectional compression experiments. Cylindrical samples with a diameter of 100 mm were subjected to unidirectional hot compression under conditions of 50% deformation and a strain rate of 3 mm/s. Finite element simulations reveal that the strain distribution across the samples remained largely consistent at different temperatures, with strain gradients