Lower limb ulcers are common and frequent diseases in surgery, especially chronic lower limb ulcers, which are difficult to heal for a long time, or recurrent after healing, seriously affecting people’s normal life and work, and some ulcers can even be “cancerous” or require “amputation”. Some ulcers may even become “cancerous” or require “amputation”. Lower limb ulcers belong to the category of “pulse paralysis” and “gangrene” in Chinese medicine. The lower limb ulcers are mostly found in the lower third of the lower leg in front of the shin or on the inside and above the inner ankle, and can also occur in the forearm of the upper limb, where the sore surface buds are old and the edges are high, constantly producing yellow secretions or pus with light red blood, and the skin around the condition is purple-brown for a long time, and some are accompanied by chronic eczema, and the affected limb swells every afternoon. Coldness, coldness, numbness and mild pain in the unterminated limb. The patient walks a certain distance with soreness and pain in the plantar or calf muscles, is forced to stop walking, and can walk after resting for 3-5 minutes to relieve the pain, and pain occurs again after walking the same distance, with pale skin color and low skin temperature at the toes (fingers). The pulsation of the uncinate artery is weakened or disappears. Phase II (dystrophic phase): coldness, coldness, numbness, pain and intermittent claudication of the affected limb, etc. The symptoms of phase I are aggravated, with rest pain, severe pain at night, sitting on the foot and sleepless nights. The skin of the foot is nutritionally impaired epidermis pale, flushed, purple or cyanotic, foot sweat reduced or no sweat, dry and flaky skin, atrophy, reduced elasticity, sweat hair loss, sparse, often with calf muscle atrophy. Stage III (gangrene phase): Due to severe ischemia of the diseased limb, ulceration or gangrene occurs at the extremity, often starting from the toe and gradually spreading upward, gangrene is dry or wet, mostly confined to the toe or foot, but can also involve the ankle or calf, the back of the foot alone or heel ulceration gangrene combined with infection, limb ulceration, may have a foul odor, pain or no pain, long-lasting treatment.