The finite element model of higpressure turbine disc of aeroengine was established by using UG software，and it was plotted into grid with ANSYS software. The stress and temperature fields of the components in each state were calculated and analyzed, the most dangerous position was determined. On the basis of heat intensity parameter equation, the creep lives of highpressure turbine disc under different working conditions were calculated, and the load spectrum of its creep life was obtained. The creep life load spectrum of highpressure turbine disc was extracted, and the creep life of highpressure turbine disc was equivalent calculated based on the linear superposition principle of creep life consumption. The research results provide a basis for predicting the creep life of highpressure turbine disc.