Abstract: Taking the equivalent fatigue damage of primary cycle as the character,the statistical rules for flight mission profiles of aero-engine are studied in this paper,mainly for different pilots'control actions.By using the actual flying data of a trainer engine,the low cycle fatigue damages of aero-engine made by different airplane pilots'control action in the same mission profile follow normal distribution,the values of normal distribution parameters in different mission profiles are different,but no salient change appears for different airplane pilots'control action.