GB/T 8434-2013 specifies the test method for the colour fastness of Spinning & weaving alkali resistance. The standard specifies the key parameters of the test equipment, such as the shrinking machine, as well as the types and concentration requirements of alkaline reagents. The treatment process of Spinning & weaving products in alkaline shrinking environment is described in detail, including key conditions such as temperature, time and mechanical force. By comparing the color changes of Spinning & weaving products before and after shrinking, the colour fastness grade is assessed according to the standard sample card. According to this standard test, the Color Stability of Spinning & weaving products after alkaline shrinkage process can be accurately judged, which provides a key basis for Spinning & weaving enterprises to control product mass and optimize production process in relevant processing links.