Abstract: Combined with the structure of ordered products and the characteristics of heat treatment equipment of a steel plant, aiming at the bottleneck problems of low temperature impact property fluctuation and high cost existing in the current heat treatment process of 14Cr1MoR steel, a new heat treatment process innovation of high temperature annealing +quenching+tempering was carried out in the laboratory. The results show that, the control level of tensile properties at room temperature at 1/2 of the plate thickness obtained by the process described is equivalent to that of the current process. The impact toughness at low temperature at 1/2 of the plate thickness is generally better. The microstructure is more uniform and refined, and the heat treatment cost per ton of the steel is reduced by about 350 yuan, which provides technical support for enterprise innovation and development.