ISO 4892-1-2016 "Plastics. Laboratory Light source exposure methods, Part 1: General guidance" provides exhaustive guidance on methods for exposing plastic materials to Light sources in a laboratory environment. This standard is suitable for accelerating the assessment of the durability and performance changes of plastics in real-world use by simulating climate stresses such as solar radiation, heat and moisture. Different types of laboratory Light source equipment such as Xenon-arc lamps and fluorescent UV Lamps are covered and the operating requirements and performance standards of the equipment are described in detail. Through these standardized experimental methods, plastic manufacturers, users, and researchers can more accurately evaluate the weathering resistance and Optical Properties of materials, providing a reliable reference for product design and material selection.