Abstract: Mo-ZrO₂ alloys were prepared by powder metallurgy technology.The microstructure and mechanical properties of Mo-ZrO₂ alloy after annealing at different temperatures were studied.The results show that, the s tarting recrystallization temperature is 1100℃ and the ending recrystallization temperature is 1300℃.With the increase of annealing temperature, the hardness and tensile strength of Mo-ZrO₂ alloys decrease.After annealing at 1400℃, the hardness and tensile strength of Mo-ZrO₂ alloys are the lowest, the hardness is 50.36 HRA, and the tensile strength is 420 MPa.