To study the reduction properties and kinetic characteristics of calcium ferrate, in the temperature range of 1 123 ~ 1 273 K, under the atmospheric conditions of 30% H₂ + 70% N₂(volume fraction), the reduction test of BaO mass factions of 0%, 2%, 4% and 8%, respectively, is carried out by isothermal weight method. X-ray diffractometer and scanning electron microscopy are used to analyze the phase composition and microscopic morphology of samples before and after restoration. The results show that the solid solution of BaO and calcium ferrate occurred at high temperature forms calcium ferrate and barium ferrate solid solution phase("CFBF"), which exists in the interior of calcium ferrate in the form of particles. When the BaO mass fraction is fixed, the maximum reduction degree of calcium ferrite at different temperatures does not differ much, both at 0.95 and 1; when the temperature is unchanged, as the BaO mass fraction increases from 0% to 8%, the reduction degree of calcium ferrite gradually decreases, and the apparent activation energy increases from 41.2 kJ/mol to 77.9 kJ/mol. Ln-ln method and Sharp method analysis show that the reduction of CF conforms to the F1 and R2 models, and the model function of the BaO calcium ferritate reduction process function is F1 model in the early stage(the reduction degree is less than 0.5) and the later stage( the reduction degree is greater than 0.5).