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To discuss the effect of application of de cell xenoma rndermal and chin auto- pachyderma in functional position anaplasty during the late period of super- large burn.Method To incise eschar and cograft of de- cell xenoma dermal and chin auto pachyderma on 15 arthrogryposis and deformation positions of 4 super- large burns and follow up for the effect regularly.Result 7 skin grafts were living entirely, 5 parts were healing in the short time by dressing change, 3 parts were healing by complement skingrafting,the mean survival rate of cograft was (94.9± 5.5)％ .Conclusion The local appearance was smooth and well- arranged,the character was soft and the function was well.The effect was near to large- leaf auto intermediate split thickness skin graft and can reach the purpose of functional restoration. rn