The pathogenesis and formation of residual wounds in the late stage of burns (1) Deep burn wounds are infected after healing and form ulcers. Clinical manifestations for the healing wound formed under the scab infection and erosion to the surrounding expansion, the formation of ulcers. After treatment, the infection is controlled, and the wound tends to heal and crust. If the wound drainage is not accessible, it is easy to form infection again, resulting in the wound not healed for a long time. (2) Deep II degree wound healing, epidermal damage involves more than 2/3 of the dermis. Deep II degree wounds are reconstructed with sweat glands and sweat ducts as the center of the epithelium, and the epithelialization time is as long as 4 to 5 weeks. In this newly healed wound, the epidermis is thin and tender, and underneath it is a dense and firm dermis, and the interlocking structure between the epithelial pedicle and the dermal papillae of normal skin disappears. Tender epidermis on the surface of the dermis is like a piece of paper on the glass, very slight external force can be dislocated, damage, the formation of blisters. After ulceration, residual trauma is formed. (3)The distance between the skin pieces of early implantation is too big, the epithelium spreads to the surrounding growth fails to cover the wound completely; or the wound that has been healed in the gap between the skin pieces, due to the newborn epithelium is very thin and tender and easy to break or due to the protection of the newborn epithelium is not wrapped with a bandage, which results in the newborn epithelium’s premature activity, causing the blisters to break repeatedly, and the wound is not healed after a long period of time. (4) The skin donor area is deeper and not healed for a long time, which is also one of the reasons for the formation of residual wounds. (5) Large area burns later neglected the treatment of wounds or improper treatment, resulting in residual small wounds repeatedly infected, not healed for a long time. Treatment of burn residual wounds 1, ideological: pay attention to prevention, in the whole burn treatment to grasp the Ⅲ ° wounds of cutting (chipping) scabs and granulation wounds of autologous skin transplantation, which is currently the best method. 2, psychological treatment: to give the patient with strong confidence, relieve the patient’s ideological concerns. 3, the treatment of trauma: thorough trauma plus biological dressings to cover, as early as possible to close the wound; pruning out of the skin and aging granulation tissue, with sensitive antimicrobial trauma of wet compresses, epidermal cell growth factor application, and so on. 4, often clean the wound, timely and effective drug change, turn over regularly to avoid wound pressure, moisture and infection. When turning over every time, use the hairdryer to dry the wound. 5, when possible, apply 0.05% neosporin or 0.01% potassium permanganate solution bath, immersion or shower, thoroughly clean normal skin, trauma and new epidermis. The bathing time should be long enough, usually 1~2h, in order to help prevent and control infection, improve blood circulation and promote wound healing. At the same time, it can remove the dirt behind the epidermis, soften the epidermal keratinized crust, and facilitate the removal and drainage of accumulated pus. After the wound is cleaned and then localized medication, the effect is better. 6, has healed the wound care: to regular paraffin oil to scab, especially those thicker and began to have loose scab, easy to accumulate pus; rubbing paraffin oil also at the same time to increase the skin’s abrasion resistance. 7, in the rehabilitation exercise at the same time, for example: standing, walking, exercise, etc., patients are prone to blisters, as long as the timely suction, will soon heal; can also be equipped with elastic sleeve or elastic bandage. Even, sometimes, when recovering for sports, due to the increase in the range of activities, new trauma will appear. It is generally recognized that the preservation of an active joint, and temporary trauma, the former is more important. 8, environmental considerations: burn trauma to the environmental requirements, humidity 40 ~ 60%, in case of high humidity, the application of dehumidifier dehumidification; daily indoor ventilation pressure 2 ~ 3 times, ultraviolet irradiation for the second time, each time for 30 minutes, mopping the floor 1 ~ 2 times a day (can not be too wet).