GB/T 7073-1997 is the test standard for the color fastness of Spinning & weaving products to silk light. It specifies the detection method of the colour fastness of Spinning & weaving products under mercerizing treatment, a common process, including required equipment, parameters of mercerizing treatment solution, operation process and result evaluation details. According to this standard test, the stability of Color after mercerizing treatment of Spinning & weaving products can be accurately evaluated, which provides a key basis for Spinning & weaving enterprises to optimize production processes and ensure product mass, and helps to improve the competitiveness and quality of Spinning & weaving products in the market.