GB/T 11546.2-2022 "Determination of creeping performance of plastics, Part 2: Three-point bending creeping" is a Chinese national standard, which stipulates the test method for determining the creeping performance of plastic materials by three-point bending loading method. This standard is suitable for evaluating the deformation behavior of plastics under long-term loading, and provides an important basis for the durability and Stability of materials in engineering applications. The standard describes in detail the test equipment, sample preparation, test conditions, data records and results analysis methods to ensure the standardization of the test process and the comparability of results. Through this standard, the creeping characteristics of plastic materials under constant load can be scientifically evaluated, providing reliable data support for material selection, product design and life prediction, and helping to improve the performance of plastic products in long-term use.