Abstract: According to the actual heat treatment condition, the heat treatment process was simulated on a rapid phase transition device, and the influence of retained austenite on reversed austenite content was concluded by controlling the temperature after aging. The results showed that the content of alloying elements influenced the austenite content after the final aging process, and with the increase of retained austenite content after intermediate treatment, the content of austenite increased first and then decreased after final aging. Controlling the content of retained austenite strictly was one of the methods to adjust the content of reversed austenite in blade.