Old rotten legs caused by varicose veins should be treated surgically by stripping the tortuous blood vessels, and local skin grafting can also be performed for the ulcerated surface. After surgery, it is important to prevent infection and to change the medication regularly, because there is also a possibility of skin necrosis. For mild, relatively small ulcers, simple vascular debridement is chosen as an anti-inflammatory treatment in the postoperative period to prevent the formation of venous thrombosis in the lower extremities. Patients with varicose veins need to leave bed early for functional exercise after surgery, and also wear compression stockings or compression trouser treatment during activities, which can also promote venous blood return and relieve the patient’s discomfort. The obvious ulcer surface also needs to be changed intermittently after surgery, including the use of iodophor or the intermittent topical application of Mepore moist burn cream, which can also promote the healing of local ulcers.