To understand the effect of aging on safety of explosive parts,the accelerated aging test of temperature 75 ℃, 100 d and temperature 65 ℃,180 d were done respectively. For the novel and accelerated aging explosive parts，the thermal explosion test, the fast cook-off test and the drop test were carried out, and the testing data were analyzed comparatively. Results show that the thermal explosion delay time of explosive cylinder are shortened, and the thermal safety are receded after accelerated aging. The deflagrating temperature is decreased with the deflagrating time is shortened for aging fast cook-off bomb, and the breach degree of deflagration on fast cook-off bomb shell is big. When deflagration droped from aging explosive parts, the over pressure of shock wave are big. The residual explosive of unreaction on target plank are fewer, and the impact safety are decreased.