The recurrence of ulcers after varicose vein surgery, if the ulcers are caused by poor venous return of the lower limbs, can be treated by tying the medical elastic stockings on the affected side of the calf; if the ulcers are caused by the lateral circulation not restored after the operation, can try to move the lower limbs to improve the circulation after the operation; if the ulcers are caused by deep vein valvular insufficiency, can take the femoral vein puncture and other surgical methods to treat the ulcers. 1. Poor venous return in lower limbs: it may be due to poor blood circulation after operation, resulting in accumulation of local metabolites, which may cause recurrence of ulcers when the wounds have not healed and the iliac veins are compressed, and medical compression stockings can be tied to the affected side of the calf to promote blood return. 2. Lateral circulation is not restored after operation: it may be due to the blood circulation has not been restored after operation, resulting in poor circulation, which may lead to recurrence of ulcer, try to move the lower limbs to improve the circulation after operation. 3. Deep vein valvular insufficiency: usually due to deep vein valvular insufficiency that leads to elevated venous pressure, thus ulcers may recur after vein surgery, minimally invasive procedures such as femoral vein puncture can be done to improve the symptoms. If the ulcer recurs after venous surgery, the doctor should be informed promptly to clarify the cause of the disease and standardize the treatment under the doctor’s guidance.