This standard specifies the environmental test method for simulating solar radiation on the ground, aiming to evaluate the durability and performance changes of materials and products under solar radiation. The standard describes in detail the test equipment, sample preparation, test conditions, test steps and methods for evaluating results. By simulating the real solar radiation conditions, the test can effectively inspect the aging, fading, degradation and other problems of materials under sunlight exposure, thus providing reliable performance data for the long-term use of materials. This test method is widely used in product development and quality control in construction, automotive, electronics and other fields.