In the dyeing and finishing process, the post-treatment soaping process plays a key role in quality guarantee which mostly relfects on color shade and dyeing fastness. Generally, the conventional post-treatment soaping agent is soaped to remove the color by using a detergent composed of a surfactant, resulting in a large amount of foam and wasting water, incomplete washing, increasing the amount of waste water, and wasting energy. This product has excellent washing function and can improve the color fastness.