The traditional way of scouring and bleaching must be operated under high temperature, high pH value to reach satisfactory effect. It not only has high energy consumption, serious damage to the bleached fabric, but also has low peroxide bleaching efficiency, which has caused a great waste of resources. Therefore, Low-temp Scouring Enzyme HS-111 is used to oxidize and decompose impurities on the surface of cotton fibers at pH value, which is conducive to the construction of low temperature and efficient cotton fabric pretreatment process, so as to achieve the requirements of energy saving and emission reduction. Greatly save water, electricity, steam and other energy and labor costs, save time and improve production efficiency, maintain excellent cloth effect and internal quality of cloth.