The prevalence and incidence of diabetes is increasing year by year, and it has become the third “health killer” after cardiovascular disease and cancer. Many diabetic patients usually due to elevated blood glucose without obvious symptoms, do not think, long-term (generally more than 5 years) after a variety of complications ensued after the beginning of regret. Here are some common complications of diabetes. 1, diabetic macrovascular lesions Diabetic macrovascular lesions are mainly cardiovascular and cerebrovascular disease, including coronary heart disease, angina pectoris, myocardial infarction, stroke, etc., seriously affecting the quality of life, and even those who can be life-threatening. 2, diabetic retinopathy is mostly seen in long-term poor glycemic control, disease duration of more than 10 years of patients. Many patients mistakenly think that it is “cataract”, “presbyopia”, etc. and delay timely diagnosis and treatment. 3.Diabetic nephropathy Diabetic nephropathy may be asymptomatic in the early stage, but Su Zi and time progress, there may be urine foam for a long time, or accompanied by swelling of the face, eyes, feet, these are highly suggestive of diabetic nephropathy may be. 4, diabetic foot disease Diabetic patients with a longer course of diabetes, due to diabetic neuropathy and diabetic vasculopathy, resulting in recurrent leg and foot ulceration, infection, poor healing, and even amputation. 5.Diabetic peripheral neuropathy Symptoms include numbness of the limbs, tingling sensation, burning sensation, sometimes local sensory dullness, sometimes like wearing gloves, socks, like “scratching” feeling, or feeling ants. In order to avoid or delay the emergence of diabetic complications, you need to do the following: 1, usually strict control of blood glucose within the standard range. This mainly includes diet control, exercise, blood glucose monitoring, oral hypoglycemic drugs or insulin therapy. 2.Control of concurrent hypertension, hyperlipidemia and so on. 3.Essential lifestyle interventions such as quitting smoking and drinking and reducing work pressure. 4, regular review in regular hospitals such as electrocardiogram, cardiac ultrasound, neck vascular ultrasound, regular funduscopic examination and visual acuity examination (once a year each), routine urinalysis, 24-hour urinary microalbumin, 24-hour urine protein, touching the dorsal arterial arterioles of the foot, plantar pressure test, ultrasound of the blood vessels of the lower limbs, electromyography and determination of the speed of nerve conduction, glycated hemoglobin test, lipid test, etc. These need to be under the guidance of a specialist doctor. These need to be done under the guidance of a specialist. It is believed that with the above methods, the complications of diabetes can be effectively prevented.