The accelerated aging tests of high energy nitramine propellants,trietheleneglycol dinitrate (TEGN) propellants and nitroguanidine propellants at various temperatures (95,85,75 and 65 ℃) were carried out. The contents of the effective stabilizer in propellants for various accelerated aging times were measured. The kinetic parameters E_a and lnA of effective stabilizer consumption reaction and the probable mechanism functions g(α) were obtained. Results show that the stabilizer consumption reaction in high energy gun propellants can be described preferably by g(α)=-ln(1-α). The regressive correlation coefficients are more than 0.98. The confidence limits are more than 95%. The apparent activation energies of the effective stabilizer consumption reaction are between 110 kJ·mol^-1 and 160 kJ·mol^-1. Activation energies of high energy nitramine propellants are more than that of TEGN propellants. Activation energies of nitroguanidine propellants are between the other two propellants.