In fact, diabetes itself is not scary, what is really scary is the various complications. Among them, the diabetic foot is one of the most common complications, which often leads to amputation and even endangers the lives of patients. First, neurological and vascular pathology is the basis of the pathogenesis of modern medicine, the occurrence of diabetic foot and diabetes-induced neuropathy, peripheral vascular disease, as well as infection and other factors. Diabetic peripheral neuropathy can lead to impaired sensation, so that patients lose self-protection mechanisms, vulnerable to external damage; motor neuropathy can make the patient’s foot muscle atrophy, foot mechanics change, so that the force point of the foot changes, a point of prolonged stress and friction callus, compression of subcutaneous tissue leading to the formation of ulcers; autonomic neuropathy makes the skin dry, easy to crack, creating conditions for the invasion of bacteria. Diabetes mellitus, if left untreated for a long time, leads to atherosclerosis and thrombosis, resulting in ischemic necrosis of the extremities. Neuropathy and vascular lesions often act simultaneously, so that a small trauma can cause microbial invasion and infection, and the infection is easy to spread. Second, the foot is dry and cold is the early manifestation of diabetic foot what kind of performance, how to find it early? Diabetic foot from mild to severe can be manifested as intermittent claudication, lower limb rest pain and foot gangrene. In the early stage of the disease, the skin is dry, sweatless and easily cracked. Physical examination can reveal the manifestation of insufficient blood supply to the lower limbs, such as pale skin of the foot when the lower limbs are elevated, and then purplish when the lower limbs are lowered. The foot is cold, and the dorsal foot artery pulsation is weakened. Further development of the disease, the lower extremities, especially the feet can appear ulcers, necrosis, sores do not heal for a long time, serious cases have to be amputated. According to the severity of the disease, the diabetic foot can be graded, and the current clinical use is the six-grade classification method proposed by Wag-ner in 1981: Grade 0: there is a risk of foot ulcers, but no ulcers at present. Grade 1: surface ulcers, no clinical infection yet. Grade 2: deeper infection, often combined with soft tissue inflammation, without abscess or bone infection. Grade 3: Deep infection with bone and histopathology and abscesses. Grade 4: Limited gangrene (often in the toes, heel, and dorsum of the forefoot). Grade 5: Total foot gangrene. Third, the combination of Chinese and Western medicine is more effective in the treatment of diabetic foot first of all, the basic treatment, that is, control of blood sugar, blood pressure, regulation of blood lipids, control of blood sugar, including strict dietary control, oral hypoglycemic drugs, weight loss and other comprehensive treatment program. Make sure that fasting blood sugar, postprandial blood sugar and glycated hemoglobin reach the normal range. Control of hypertension, including rest, psychological regulation, taking antihypertensive drugs and other methods, to ensure that blood pressure is reduced to the ideal level, which is necessary to prevent and treat atherosclerosis. Diabetic patients can drink acacia tea, silver flower tea, grass cassia tea, hawthorn tea to regulate blood lipids, and take lipid-regulating drugs if necessary. Next is the surgical and medical treatment for vascular and neurological lesions. Surgical treatment, such as revascularization surgery (vascular replacement, angioplasty or vascular bypass), can save some diabetic patients from amputation. Internal treatment has treatments that are specific to neuropathy. Treatment of neuropathic pain often begins with general analgesics, and nonsteroidal anti-inflammatory drugs such as diclofenac and diclofenac sodium are effective. For deep pain, carbamazepine with sedatives is used, and for superficial pain, horseradish emulsion is used topically. For patients with severe pain, strong analgesics such as prednisolone and morphine extended-release agents are chosen. To improve the microcirculation of the lower extremities, intravenous drips of vasodilators and blood circulation-improving drugs such as danshen, Chuanxiongzin, heparin, 654-2, prostaglandin-E, etc. can be administered orally, such as pansentin and aspirin. The third is the treatment of infection. Anti-infection treatment is mainly the application of antibacterial drugs, the principle is that generally mild infections can be dispensed with, obvious infections can be taken orally, and serious infections need intravenous drip. In cases of combined osteomyelitis and deep abscesses, hospitalization is often required to strengthen anti-inflammatory treatment. Some studies have concluded that the general infection bacteria of diabetic foot are mainly staphylococci and streptococci, and deep infection is caused by multiple species. Therefore, quinolones combined with second- and third-generation cephalosporins are often chosen as antimicrobial agents, and triple antimicrobial therapy can also be used, with the addition of anti-anaerobic drugs such as metronidazole. Before antibacterial treatment, it is best to perform bacterial culture and select appropriate antibacterial drugs according to drug sensitivity test. Along with antibacterial treatment, deep infections require unobstructed drainage and effective debridement surgery, including removal of infected bone tissue and amputation. The diabetic foot is equivalent to the “gangrene of thirst” in Chinese medicine, which is also known as “canker sores” in the Nei Jing. Since Chinese medicine has a long history of treating diabetic foot and exact efficacy, the combination of Chinese and Western medicine in treating diabetic foot has become one of the hot spots in the field of diabetes today. In addition to the internal use of Chinese medicine, the external use of Chinese medicine also plays a very important role in removing the decay and healing the ulcer. Fourth, the response to risk factors have shown that 50% of the patients with diabetic foot amputation can be prevented. Therefore, it is very necessary for diabetic patients to prevent some risk factors: 1, usually wear soft cotton socks and loose cloth shoes, to avoid the friction of the foot with ill-fitting shoes and socks; 2, should often check whether there is a callus or corns formed on the foot, once it appears should be removed under the guidance of the diabetic doctor, do not deal with it yourself; 3, diabetic patients because of neuropathy, lack of sensitivity of the foot to the stimulation of foreign bodies Because of neuropathy, diabetic patients’ feet lack sensitivity to the stimulation of foreign objects and are prone to form injuries. Therefore, when you go out, you should always check whether there are foreign objects (such as stones, straw sticks, etc.) entering your shoes. Some patients like to walk barefoot on cobblestone roads, thinking that this can play a role in foot massage. In fact, this is very dangerous for diabetics, and many patients have had their feet damaged by this practice, resulting in amputation. Scalding is also one of the main causes of foot injury in diabetic patients, should avoid washing feet with too hot water, foot warmers, hot water bags should not be too high temperature; 4, correctly trimmed finger (toe) nail, both sides (toe) nail should not be cut short to the nail groove, should be left about a millimeter. If you have tinea pedis infection, you should actively treat it, and you can use antifungal Chinese medicine to wash it externally (bitter ginseng, groundnut, snake’s bed, etc.); 5. Long-term bedridden patients should massage their heels and ankles regularly to keep the blood flowing and prevent bedsores from rubbing for a long time; 6. The chance of arteriosclerotic occlusion of the extremity increases significantly, so diabetic patients must quit smoking.