Zhao, a 41-year-old male, was admitted to the hospital with recurrent dry mouth and excessive drinking for more than 10 years and blisters on both feet for 1 day. The patient was diagnosed with type 1 diabetes mellitus for more than 10 years and had been treated with insulin. He had been treated with insulin for more than 10 years. He had poor glycemic control due to poor diet, recurrent hypoglycemia and ketoacidosis. One day ago, the patient suddenly found water stains on the bed sheet after waking up in the morning, followed by several blisters on the feet with slightly low skin temperature and pain, and came to our clinic. On examination: multiple blisters on the surface of both feet, several ulcers, low skin temperature and sunken edema. Examination: BMI: 20.78 BP: 130/70mmHg, T: 39.2℃, mental clarity, mental atrophy, lower limbs swelling, bilateral dorsalis pedis artery pulsation is weak, vibration sensation and pins and needles sensation at the back of the big toe, 10g filament tactile sensation is absent, bilateral knee reflexes are not elicited. The tongue was red with thin coating and slightly greasy root, and the pulse was thin and stringent. Vascular ultrasound: bilateral lower limb atherosclerosis with plaque formation. Fundus examination: stage IV diabetic retinopathy in both eyes. Diabetic foot is an important complication of diabetes and a major cause of disability, and about 15% of diabetic patients will develop foot ulcers during their lifetime. With the increasing incidence of diabetes in China in recent years, the occurrence of diabetic foot ulcers has also been increasing. The clinical manifestations are mainly itching of the skin, pain in the toes of the lower extremities, coldness, pale or cyanotic skin, cold extremities, edema or dryness, darkening, numbness and dullness or loss of sensation of the diseased foot, combined with infection, foot ulceration, necrosis, long-lasting trauma, and having to undergo amputation. The occurrence of diabetic foot often has the following high-risk factors: the duration of diabetes mellitus is more than 5 years; poor long-term blood sugar control; poor foot health care, wearing inappropriate footwear; symptoms of ischemic vascular disease, such as: intermittent claudication, cold feet, poor local blood circulation; symptoms of neuropathy, numbness of the foot, reduced or absent sensation of touch or pain; poor lifestyle, smoking, alcoholism, poor economic conditions The patient has not received systematic education about diabetes and does not pay attention to the disease. The patient had a series of foot symptoms because of the combination of these risk factors. After admission, the patient was firstly given health education on diabetic foot care and strengthened the concept of self-care, and was also given Roxifene, desmethylvancomycin, Tylenol, penicillin combined with Zocor and Dafukang as IV anti-infection, insulin pump to control blood glucose, daily foot dressing change, local debridement and anti-inflammation, tachyphylaxis to reduce swelling, human albumin to correct hypoproteinemia and promote wound healing. In addition, we also provide daily foot replacement, localized trauma, tachypnea and swelling, human albumin to correct protein hemorrhage and promote wound healing. Health education is essential for patients with diabetic foot disease. Reducing risk factors for injury and infection is a fundamental measure to prevent the development of foot ulcers, and active prevention of foot trauma should start with every foot-related thing in daily life. From the appropriate temperature of foot washing water and the choice of bathing gel to the taboos of wearing shoes and walking, all should be paid attention to. In particular, we should emphasize: we should take care of the skin of the feet to prevent dryness and cracking, and keep them clean; we should not trim the toenails too short to avoid damaging the skin; we should avoid walking barefoot and soaking the feet in hot water; we should choose suitable shoes, such as sports shoes, special model shoes, shoes with thick insoles or shoes with enlarged or longer toes; we should avoid shoes with tight, open front or exposed toes and high-heeled shoes; socks should not be too tight to avoid Socks should not be too tight so as not to affect blood flow, and smooth and soft cotton socks with good moisture absorption and no stimulation to the skin should be chosen. Chinese medicine focuses on the combination of internal and external treatment, which is very effective in improving patients’ symptoms and promoting wound healing. The combination of Chinese and Western medicine can make up for some defects and deficiencies of Western medicine in the treatment of diabetic foot, especially on the basis of good control of the patient’s blood sugar level, the internal and external application of Chinese medicine can effectively reduce the numbness and pain of the affected limb, promote the healing of the patient’s ulcer wound, greatly reduce the amputation rate and improve the patient’s survival quality. After 35 days of treatment, the edema of one lower limb of the patient completely subsided, and the edema of the other side improved significantly. The sore surface of both feet was dry, with fresh granulation growth in progress, little exudation, and normal toe skin color. After discharge from the hospital, the medication was changed on an outpatient basis, and the wound was completely healed after about two weeks, but the sensation was still sluggish and numb. She was given Chinese herbal fumigation to invigorate blood circulation, with medicines such as frankincense, myrrh, lutong, safflower and mugwort. Chinese medicine fumigation therapy is a traditional treatment method, it can “cut in the skin, through the flesh, ingestion in the inhalation, melting in the ooze”, the use of steam penetration so that the drug directly on the lesion tissue, play the joint effect of drugs and physical warmth and effective. In this formula, the formula includes Pulchinenia, Safflower and Mugwort to invigorate blood circulation, relieve tendons and pain; Boswellia and Myrrh to invigorate blood circulation and relieve pain, reduce swelling and toxicity, and relieve cold in the meridians; the combination of these drugs can achieve the effect of invigorating blood circulation and eliminating blood stasis, dispersing cold and clearing stagnation. At the follow-up visit after three months, there was no edema in the lower limbs, the numbness improved, the cold pain in the feet was reduced, and the sleep at night was good. Diabetic foot is a common complication of diabetes mellitus. Repeated ulcers and prolonged failure to heal bring great physical pain and mental suffering to patients. Chinese medicine treatment has strong flexibility and individual targeting, and can well prevent and treat the occurrence and development of the disease through the combination of identification and disease identification, the combination of evidence-based treatment and specific prescriptions and medicines, and the combination of internal Chinese medicine and external Chinese medicine treatment methods.