Drugs that promote wound healing are: 1. Topical recombinant human epidermal growth factor. Topical recombinant human epidermal growth factor is involved in the whole process of wound healing, which can reduce inflammatory cell exudation, promote the formation of new granulation tissue, capillaries and collagen fibers in wounds, and shorten wound healing time. 2. chitosan. Chitosan can induce the proliferation of local macrophages in wounds and enhance their activity to reduce wound infection and facilitate wound healing. In addition, chitosan can also inhibit the production of type I collagen in wounds, thereby reducing the production of scars during wound healing. 3, gelatin sponge. Gelatin sponge has good permeability and moisturizing properties, which can keep the wound moist. A moist wound environment can enhance the bactericidal ability of white blood cells and promote the proliferation of skin epidermal cells. It can also create a low-oxygen environment and increase the capillary production of the tissue around the wound, which plays a role in promoting wound healing.