This standard specifies the test method for determining the saliva-resistant colour fastness of Spinning & weaving products, which is applicable to various Spinning & weaving products. The test method evaluates the change of Spinning & weaving products after exposure to saliva by fitting the specimen to the standard lining fabric and treating it in a simulated saliva environment. The standard provides an important quality control basis for products that come into frequent contact with saliva, such as infant products and medical Spinning & weaving products, to ensure that the product maintains Color Stability during use. The standard also specifies the method for assessing discoloration and staining and related equipment requirements.