If the skin of the lower extremity is broken and there is a local inflammatory reaction, iodophor should be applied for disinfection and dressed with a sterile dressing. If the skin has obvious necrosis, necrotic tissue should be excised under local anesthesia and postoperative intravenous anti-infection should be performed. Some patients are prone to severe cellulitis secondary to dermatitis, and even show enlarged lymph nodes in the inguinal region. If there is significant swelling of the limb, the affected limb should be elevated to promote venous blood return and play a role in decongesting the swelling. During the treatment period, if fever occurs, drinking more water, physical cooling or intramuscular injection of lysine can alleviate the patient’s discomfort. Insist on daily medication changes to promote wound healing, and gauze should be replaced promptly if it is soaked through.