Vasculitis can refer to the category of gangrene in Chinese medicine (at first cold and numbness of limbs, then necrosis of toe joints, black rot and ulceration, long time without healing), and the traditional Chinese medicines used in treating this disease include Yanghe Tang, Taohong Siwu Tang, SiMiaoYongAnTang, GuBu Tang, HuangqiTaipeiTang, etc. The symptoms of this disease are warmth and coldness, numbness, soreness and pain, which will be aggravated by more walking. 1. When the affected toe (finger) likes warmth and is afraid of cold, numbness, soreness and pain, the pain is aggravated by walking more, the pain is reduced by resting a little, the skin is pale and cold to touch, Yanghe Tang can be used to treat the disease with additions and subtractions. 2. When there are symptoms such as aggravation of soreness and pain in the affected toes (fingers), difficulty in sleeping at night, difficulty in walking, dark red or purplish color of the skin of the affected toes (fingers), even more so when they are sagging, cold and dry skin, and muscular atrophy, the patient can be treated with the addition of Taohong Siwu Tang with subtractions. 3. When there is severe pain in the affected limb, which is light day and heavy night, localized swelling, purplish skin, dipping and spreading, ulcerated and decayed, flesh color is not fresh, accompanied by fever, dry mouth, constipation, ulceration and redness, etc., Si-Miao Yong-An Soup can be chosen for treatment. 4. When there is dry skin, hair loss, thickening and deformation of toe (finger) nails, muscle atrophy, dry gangrene of toe (finger), accompanied by dry mouth, constipation, ulcerating and redness, etc., Gu Bu Tang with additional subtraction can be used for treatment. 5. If the disease lasts for a long time, the sores do not heal for a long time after the necrotic tissues are detached, and the buds of flesh are dark red or pale but not fresh, accompanied by tiredness and weakness (fatigue and weakness), thirst and lack of desire to drink, lack of splendor of the face, emaciation, and heart-heat (heat of the hearts of the hands and the feet, and self-consciousness of the heart and chest heat), Astragalus Tetrastragali Soup with Extra Reduction is recommended for the treatment. All of the above medicines should be used correctly under the guidance of a professional physician, and should not be used on their own.