There are many causes of burns, including thermal burns, flames, hot water, solids, and more. Burns are more complex things. Generally divided into four degrees, the treatment of burns and the depth and area of the burn is related to the general burns of the traditional division is called 3 degrees and 4 divisions, divided into I degree, shallow II degrees, deep II degrees and III degrees, later appeared 4 degrees and 5 divisions, is divided into 3 degrees into deep III degrees and shallow III degrees, we call III degrees and IV degrees. For burns of different depths, the healing time is different, and so is the treatment. Generally a 1st degree burn heals in about a week. Burns are divided into several periods, mainly for large burns, large burns treatment is divided into four periods, one is the burn shock period, 48 hours after the burn, mainly exudation of trauma, because of the loss of large amounts of exudate led to the loss of tissue fluids, circulatory disorders, so it is the shock period of burns. 48 hours after the resorption period, the resorption period will lead to the tissue’s localized swelling, absorption of water, coupled with the trauma of water, and the resorption period, the resorption period, the resorption period will lead to the localization of tissue, the absorption of water. The reabsorption period leads to localized swelling of the tissues and absorption of water, which, together with the openness of the wound, can easily lead to bacterial support, so it is also called the infection period. The third period is called the repair period, which is the continuous repair of the wound, including the healing of superficial wounds on their own, and the artificial interference of deep wounds, surgery, skin grafts, and so on. The fourth period is called the healing period. The healing period generally refers to the period of scar formation and scar rehabilitation, the period of healing of the wound, after the wound has healed.