Disease introduction: Deep burns and scalds often cause severe pain, necrosis, infection, scarring and other difficult diseases on the wound surface. Currently, there is a lack of effective treatment drugs.

　　Experimental animal: New Zealand white rabbit (6-8 weeks)

　　Experimental method: 1. After the model rabbit is anesthetized, shave short hair, then use depilatory cream to remove the hair until the skin is completely exposed, fix it on a special wooden shelf, protect the head and tail, and immerse its back in boiling water in a 98℃ thermostat Medium for 12s, rinse with cold water to cool down immediately after blanching. 2. Judge the model by analyzing the pathological HE staining of the skin.