As a cushioning packaging material, EPE is prone to aging due to environmental influences during long-term storage and transportation, increasing the risk of product damage. Moreover, its lifespan testing cycle is relatively long, making it difficult to predict aging quickly. The work aims to conduct a temperature/ultraviolet irradiation dual-factor coupled accelerated aging test and establish a mathematical model to rapidly assess the aging performance of EPE materials. With the compression set rate as the aging index, the displacement acceleration factor of the aging time-compression set rate curve was obtained based on the time-temperature superposition principle. The aging acceleration factor under daily environmental conditions (20 ℃, 0.029 W/m2) was calculated using interpolation, and a coupled acceleration factor model for rapid prediction of EPE material aging time was constructed. The results showed that the higher the temperature and the greater the irradiance, the more significant the aging phenomena (yellowing, curling, cracking) of the material, the more severe the material degradation, and the poorer the mechanical properties. The data indicated that under the different temperature (40, 50, 60, 70 ℃) and irradiance (0.45, 0.86, 1.18, 1.49 W/m2), the aging time-compression set rate curves all presented a typical logarithmic trend. The predicted and actual failure time at 20 ℃ and 0.029 W/m2 were 1.17 and 1.25 years, respectively, with a relative error of 0.064. The test period was 3.13 to 6.25 times shorter than that of the single-factor accelerated aging test at a constant temperature. In conclusion, the coupled aging acceleration factor model based on the time-temperature superposition principle can accurately and rapidly predict the aging time of materials, providing theoretical guidance for the practical application of EPE and similar materials.