If there is a muscle and fascia defect after wound injury, it is difficult to achieve self-growth and flatness. The main reason is that due to the tissue defect, the surface of the skin mainly relies on the compensatory proliferation of fibrous connective tissue, including the gradual growth and proliferation of fibroblasts, and when the wound is large, scarring may occur, which makes it difficult to achieve the degree of growth and flatness. For such wounds, clinically, it is possible to minimize infection according to the needs and changes of the condition, and if the wound is relatively fresh, it is possible to carry out surface skin grafting, also known as skin grafting, for the wound defect, which may lead to the ideal healing of the skin of the defective wounds, and the possibility of long flatness. Therefore, for wounds with large tissue defects, it is best to go to a regular hospital for examination and selection of appropriate treatment to promote early healing.