This standard specifies the determination method of photothermal resistance performance of aluminum and aluminum alloy anodic oxide coatings and organic polymer films, covering instrumentation, sample preparation, test procedures, result representation and test reports. It is suitable for evaluating the weathering resistance and heat resistance of these films in exposed to light and high temperature environments to ensure the long-term Stability of products in practical applications. Through this standard, the performance testing of related products can be standardized, which helps to improve their application mass in construction, electronics and other fields.