hrbondioxide laser knife was ued to excise 40 cases of burn crusts and late cicatrices and the resuIts were compored with that from the ordinary surgieal knife. The extent of tiSsue damage,the operative successful rate and the amount of bleeding were obsered in both groupe. It was proved that by using,earbondioxide laser knife to excIse the tissue resulted in very limited damage of tissue,it did not influence the tissue healing and the amount of bleeding was far less than that fro...