The Chinese medicine prescription for treating severe lower limb vascular occlusion can be chosen from Yanghe Tang and Taohong Siwu Tang under the guidance of traditional Chinese medicine practitioners. Severe vascular occlusion of lower limbs belongs to the category of “gangrene” in Chinese medicine (at first cold and numbness of limbs, then necrosis of toe joints, black rot and ulceration, not healing for a long time), and the main efficacy of the soup is to activate blood circulation and eliminate blood stasis, and in the clinic, usually some representative prescriptions are chosen, such as Yanghe Tang, Taohong Siwu Tang and other soups to regulate the condition. Cold-dampness blocking evidence: lower limbs like warmth and fear of cold, numbness, soreness and pain, more walking will increase the pain, a little break in the pain, pale skin, touching the cold, treatment to warm yang dispersing cold (warming yang qi, dispersing the cold), activate blood and open up the channels. Yanghe Tang is added and reduced. Commonly used drugs are ripened rhubarb, ephedra, antler gelatin, white mustard seed, cinnamon, raw licorice, cannon ginger charcoal, and so on. If the Yang deficiency is serious, add the preparation of epiphyllum and cinnamon. Blood stasis and obstruction syndrome: the evidence shows that the lower limbs become more aching and painful, it is difficult to sleep at night, and it is difficult to walk, the affected toes are dark red or dark purple in color, and the sagging is even worse, the skin is cold and dry, and the muscles are atrophied. The formula is Tao Hong Si Wu Tang plus subtractions. Commonly used drugs include Angelica sinensis, Rhizoma Ligustici Chuanxiong, Radix Paeoniae Alba, Rhizoma Yanhuisuo, Cortex Cortex, Prepared Milkweed, Centipede, Scorpion, and Tortoise Worm. Oral Chinese medicine soup can play a certain auxiliary effect, if the patient’s symptoms worsen during the period of medication, please consult a doctor in time, under the guidance of the physician to take timely surgery and the combination of traditional Chinese and Western medicine treatment, do not take medication privately, so as not to delay the condition.