Due to the effect of wool anti-felting is not satisfied by using protease alone, to enhance the reaction between protease and wool and improve wool anti-shrink effect, various oxidation pretreatment and reduction pretreatment are adopted [2] At present, chlorinated pretreatment adding protease treatment anti-felting process has been used in
many domestic factories. Considering of environmental protection, acid protease anti-felting process with hydrogen peroxide pretreatment was discussed in this paper. This process not only improves wool fabrics anti-felting performance but also not pollutes the environment.