"GB/T 31126.2-2024 Spinning & weaving products, Determination of perfluorinated and polyfluorinated compounds, Part 2: Gas chromatograph-Mass spectrometry" specifies a method for the determination of perfluorinated and polyfluorinated compounds in Spinning & weaving products by gas chromatograph-mass spectrometry (GC-MS). The method is suitable for all kinds of Spinning & weaving products and can detect 10 compounds such as perfluorooctanoic acid (PFOA), perfluorinated carboxylic acid, and perfluoroalkyl sulfonate. The standard describes in detail the steps of sample pretreatment, instrument conditions, qualitative and quantitative analysis, and has the characteristics of high Sensitivity and good accuracy. Its implementation will provide a scientific basis for the detection of harmful substances in Spinning & weaving products, help environmental supervision and quality control, and protect consumer health.