Subject and method: A comparative, prospective study had been conducted in 645 dermatome patients in National Institute of Burn from 1/3/2015 to 30/7/2017, which was devided randomly into 2 group: Group 1 (276 patients was peeled at 24 hours after surgery) and Group 2 (379 patients was peeled at 2 - 4 hours after surgery).