Abstract: By changing the forging parameters and heat treatment system, the microstructure and mechanical properties of 2Cr13 forgings under different process parameters were compared, and the influence rule of forging and heat treatment process on the properties of 2Cr13 forgings was obtained. At the same time, the relationship between the forging tempering state hardness and tempering temperature, quenching state hardness through the regression analysis was studied. The results show that reducing the number of forging fires from 3 fires to 2 fires can improve the value and stability of the impact properties of forgings. At the same time, the reduction of final forging deformation and the increase of forging temperature all lead to the reduction of impact toughness of 2Cr13 forgings. When the quenching temperature increases from 1000 ℃ to 1060 ℃, the impact toughness decreases by 23.7%, the tensile strength does not decrease significantly. When the tempering temperature increases from 600 ℃ to 700 ℃, the impact toughness of the specimen increases by 27.3%, but the tensile strength of the forgings decreases by 18.6%. Finally, the regression equation of tempered state hardness with tempering temperature and quenched state hardness is established by regression analysis: y=48.665-0.073842x₁+0.5586x₂, where y is the tempered state hardness, x₁ is the tempering temperature, and x₂ is the quenched state hardness.