This standard provides a uniform test method for evaluating the color stability of various textiles after contact with human sweat. Its core principle involves thoroughly wetting the sample in simulated acidic and alkaline sweat solutions, followed by placing it in a perspiration fastness tester under specific pressure and constant temperature conditions for a fixed duration. After the test, the degree of color change of the sample itself and the degree of staining on adjacent standard adjacent fabrics are visually assessed using gray scales. This method serves as a critical basis for assessing the color fastness quality of products such as intimate apparel and sportswear.