The appearance of swollen feet in diabetic patients is an early manifestation of diabetic complications. Diabetic patients are in a state of high blood sugar for a long time, causing an increase in blood viscosity, which easily causes some vascular inflammation and poor blood flow, which in turn produces swelling. 1, common causes 1, nephropathy: diabetic patients do not have good control of blood sugar, long-term hyperglycemia, causing nephropathy, resulting in the body’s protein through the urine excretion, so that the plasma osmotic pressure is reduced, resulting in the accumulation of water in the body, and kidney damage will affect the body’s water discharge, so that water is retained in the body and edema; 2, neuropathy: diabetic patients with neuropathy The lower extremities are in the low position of the body, the vascular contraction can not be normal will be more obvious, easy to cause bruising or swollen feet; 3, heart and liver insufficiency: if the diabetic patient heart insufficiency, return heart blood flow is blocked, will appear swollen feet; liver insufficiency will appear insufficient synthesis of albumin, hypoproteinemia swollen feet; 4, venous disease: diabetic patients with venous valve closure insufficiency, varicose veins, phlebitis, venous thrombosis, may appear swollen feet; 5, the application of the treatment of diabetes drugs: such as thiazolidinediones, insulin, calcium antagonists, etc., are likely to cause swollen feet. Second, the treatment method 1, control blood sugar: control of blood sugar is more important for patients with diabetic foot swelling, follow a suitable diet, to low salt, low fat, low sugar, low purine diet. Follow the doctor’s instructions oral hypoglycemic drugs, if necessary, insulin is needed to control blood sugar. When blood glucose fluctuates greatly, adjust insulin according to blood glucose, as well as the dose and type of oral hypoglycemic drugs in a timely manner; 2. Eliminate swelling: you can elevate the affected limb, strictly limit the intake of sodium in the diet, and for serious foot swelling, use small doses of thiazide diuretics to reduce swelling, such as hydrochlorothiazide; 3. Anti-infection treatment: mainly use drugs for anti-infection treatment, sensitive antibiotics can be used for treatment, common ones are Amoxicillin clavulanate potassium, clarithromycin, levofloxacin, clindamycin, etc. Third, precautions because of the causes of diabetes caused by swollen feet, so you should go to the hospital in a timely manner, and the doctor will decide the corresponding treatment. At the same time, during the treatment process, blood sugar should be monitored regularly and appropriate exercise, all of which can help to relieve swollen feet.