Deep second-degree burns are more serious and often reach below the papillary dermis. Deep second-degree burns are a kind of serious burns, if purely from the point of view of the degree of burns, the depth of deep second-degree burns has reached the injury to the dermis below the papillary layer, but there will still be a small amount of skin attachments remain, local tissue necrosis, skin sensory retardation, and often produce severe inflammatory reaction, mainly due to bacterial infection. Deep second-degree burns take a long time to heal, if there is no infection, they can be repaired by fusion of epithelial islet extension, clinically it usually takes about a month to heal, and there is often scarring after the wound has healed. Deep second-degree burns should be removed from the heat source as soon as possible, and protect the wound, go to the hospital in a timely manner, cooperate with the doctor to take treatment.