Abstract: The thermal insulation performance of vacuum insulation panels (VIPs) relies on the high vacuum environment inside them, which is primarily composed of a core material, barrier film, getter, and desiccant. In practical applications, the outgassing behavior of the core material and barrier film can lead to a decline in vacuum level, thereby affecting their long-term stability. Temperature is a key factor influencing the outgassing characteristics of materials. In this study, the outgassing behavior of VIPs at different temperatures （−15°C to 70°C） was experimentally tested. The gas composition was analyzed using mass spectrometry, and the outgassing rate was calculated. Based on a composite material diffusion outgassing model, experimental data were fitted to establish a mathematical expression for the relationship between the outgassing rate of VIPs and time. The experimental results demonstrate that a rise in temperature can remarkably accelerate the outgassing process, whereas temperature exerts a negligible influence on the composition of gases released from the VIPs. Water vapor （H₂O） and nitrogen （N₂） are the main gases released. At low temperatures, the outgassing rate is lower, but slow release still occurs over time. The results offer a theoretical foundation for the optimization of desiccants in vacuum insulation panels (VIPs) and the prediction of their service life, while also providing guidance for their application in diverse temperature environments.