In order to get a kind of environmentally anti-felting finishing process for woolen knitted knitted fabric,the method of microwave / hydrogen peroxide pretreatment is applied and the effect of chitosan anti-felting finishing process is studied in this paper. The results show that the application of microwave technology can greatly reduce the time of pretreatment and increase the efficiency of pretreatment; the anti-felting process of hydrogen peroxide/microwave pretreatment combined with chitosan finishing for the woolen knitted fabric is effective, environmentally friendly.