Whether type 2 diabetes is serious or not depends mainly on blood glucose control, pancreatic islet function and complications, and cannot be generalized. If the pancreatic islet function is still good and does not need insulin to control blood sugar for the time being, and can effectively control blood sugar by taking oral hypoglycemic drugs, then this type 2 diabetes is not very serious. If there are other complications, such as macrovascular complications or microvascular complications, which may cause more damage to the body, then this type 2 diabetes is more serious. Macrovascular complications include coronary heart disease, cerebrovascular disease and diabetic foot; microvascular complications include diabetic nephropathy, diabetic retinopathy and diabetic neuropathy. One of the more serious ones is diabetic foot. if type 2 diabetic patients have diabetic foot, it means that vascular and nerve function are not very good. type 2 diabetic patients can reduce the occurrence of complications by controlling blood sugar, controlling diet, reasonable exercise, lowering blood pressure, antiplatelet, and regulating blood lipids.