“It is a chronic ulcer of the lower limbs caused by varicose veins or superficial phlebitis, mainly manifesting as skin pigmentation and skin ulcers of the lower limbs, which is clinically difficult to eradicate. The treatment method of the old rotten leg varies from case to case. 1, compression therapy mainly for mild symptoms, not yet skin ulcers when the use of this method, that is, the use of elastic stockings, elastic bandages and other external pressure to promote venous reflux, reduce blood stagnation and edema. 2, topical drug care mainly for the old rotten leg caused by skin ulceration, with the help of topical cream to repair the chronic ulcer wound, first of all, the rotten flesh and necrosis of the wound for debridement treatment, and then topical cream to promote the wound muscle epithelium, gradually heal the wound. 3, surgical treatment methods such as common sclerotherapy, saphenous vein ligation and ring stripping, radiofrequency ablation, transillumination spinotomy, etc., need to choose the program treatment according to the specific situation. In addition to medication and surgical treatment, patients should avoid standing for a long time in their daily life, and can take proper rest to elevate the affected limbs to promote the venous blood return to the lower limbs, as well as prevent trauma, because the veins are tortuous and the vein wall is very thin, easy to damage rupture and bleeding, so we should pay attention to protect the affected limbs and avoid traumatic frostbite or insect and animal bites.