Diabetes mellitus is a clinical syndrome of metabolic disorders characterized by chronic hyperglycemia associated with genetic, autoimmune and environmental factors. It is a disease that cannot be cured because its cause is unknown and can only be controlled by blood glucose, and it is called geriatric diabetes when it develops after the age of 60 or when it continues after the age of 60. The majority of elderly people with diabetes are type 2 diabetics, with only a very small number having type 1 diabetes. About 50% of all type 2 diabetes patients are over the age of 60, and nearly half of them are not diagnosed in time. This is why many older people, who have serious complications from diabetes, do not know they have diabetes until after they have had it. Diabetes is the third most common non-communicable disease in today’s society. The prevalence of diabetes in the elderly is increasing year by year due to factors such as longer average life expectancy, aging population and changing life patterns. In China, due to the large population base, rapid socio-economic development and a significant increase in obese patients, our country will become the country with the largest number of diabetics in the world. The prevalence of type 2 diabetes in China has increased to 5%, and there are about 3,000 new cases of type 2 diabetes in China every day, with an annual increase of about 1.2 million cases. In 2003, there were about 22.6 million people with type 2 diabetes in China, and now there are about 40 million people with diabetes and prediabetes. Older patients with diabetes are often associated with a variety of chronic complications, including macrovascular and microvascular complications, which can occur in up to 40% of cases due to age, long duration of disease, and delayed treatment. Diabetic eye, renal, neurological and vascular lesions are among the leading causes of disability and death in humans. Diabetes is complicated by retinopathy in 24.3%, cataract in 48%, nephropathy in 33.6%, neuropathy in 60.3% and coronary artery disease in 14.9% of cases. The incidence, severity, disability and mortality rates of complications of diabetes in the elderly are higher. For example, the incidence of cardiovascular disease and the deaths associated with it are twice as high as those in older adults without diabetes. Moreover, coronary artery lumen narrowing is severe, more vessels are involved, lesions are more diffuse, and painless myocardial infarction is more common. The prevalence of cerebrovascular disease in elderly diabetic patients is three to four times higher than that in non-diabetic patients, with cerebral thrombosis being the most common; lower extremity vascular lesions are more common and severe than in non-elderly patients. The rate of blindness in elderly diabetic patients is as high as 20%. Diabetic nephropathy often coexists with hypertensive nephropathy, accelerating renal failure. Older patients are also often found to have diabetes due to neuropathy, and the prevalence of diabetic foot is 3 to 4 times higher than in other older adults. Diabetic patients have unsatisfactory glycemic control and other metabolic indicators. Only about 2/5 of diabetic patients with combined hypertension receive antihypertensive treatment, and 80% of them have substandard blood pressure control. The proportion of patients with hypertension treated increased by 4% between 1998 and 2003, but there was still no significant improvement in the rate of blood pressure control. In addition, only about 60% of patients had been tested for lipids within one year, and of those who had been tested, about half had dyslipidemia, and only a quarter had received lipid-regulating therapy. As we all know, the symptoms of diabetes mellitus are “three more and one less” (eating more, drinking more, urinating more, and losing weight), but only 20% to 40% of elderly patients have typical symptoms, and the degree is mild and often neglected. Most elderly patients do not have the typical symptoms of “three more and one less”, but they often have non-specific symptoms such as fatigue, mild thirst, itchy skin, frequent urination, excessive sweating and impotence. Many elderly diabetic patients have a variety of metabolic abnormalities, including obesity, hypertension, hypertriglyceridemia, increased LDL cholesterol and decreased HDL cholesterol, and the risk of macrovascular complications (such as coronary heart disease and cerebral thrombosis) has increased during this period. Some elderly people only focus on testing pre-meal glucose, but most elderly diabetic patients have mainly postprandial hyperglycemia, and fasting (pre-meal) glucose is often normal or at the high limit of normal, so only fasting glucose testing will make many diabetic patients miss the diagnosis and lose the opportunity of timely diagnosis and treatment. In addition, the incidence of hypoglycemia is higher in elderly diabetic patients during the treatment process, which may be caused by reduced synthesis of liver glycogen, reduced sensitivity of adrenergic nerves to hypoglycemic response, and reduced synthesis and secretion of growth hormone, resulting in weakened glycogenolysis and gluconeogenesis. Moreover, hypoglycemia in the elderly may not have acute hypoglycemia symptoms such as palpitations and sweating, but may manifest as brain dysfunction, coma, or even induce myocardial infarction or acute left heart failure, which may endanger life. Diabetes in the elderly can also have some special manifestations, which should be given sufficient attention. (2) Diabetic myopathy, including asymmetric muscle weakness, pain and atrophy of pelvic and lower abdominal muscles; (3) Psychosomatic changes, manifested as mental atrophy, depression, anxiety, pessimism and memory loss; (4) Large scars on the skin of the feet, similar to blister scars of second-degree burns, often disappearing within 1 week; (5) Large scars on the skin of the feet, similar to blister scars of second-degree burns, often disappearing within 1 week. (5) renal papillary necrosis, which usually occurs in elderly diabetic patients, often without manifestations of back pain and fever; (6) diabetic neuropathic cachexia, a specific complication common in elderly people with diabetes mellitus, manifested by depression, significant weight loss, peripheral neuropathy with severe pain, which can spontaneously resolve after 1 to 2 years; (7) malignant otitis externa, caused by Pseudomonas aeruginosa, a necrotizing infection, almost invariably occurs in elderly diabetic patients. Therefore, the prevention and treatment of diabetes has become an urgent task. It includes diabetes health education, strict control of metabolic indexes such as blood glucose, blood pressure and blood lipids to reduce the occurrence of complications, prolong the survival life of patients and improve their quality of life. Diabetes is not scary, what’s scary is ignorance and the disorderly treatment of the disease. At present, formal treatment methods are sufficient to control blood sugar well and delay the occurrence and development of its complications. However, since there is no cure for diabetes, some elderly people are in a hurry and want to get rid of diabetes quickly, ignoring the old adage that “speed is not enough”, changing medications frequently and forgetting that “diet control and proper exercise” are the principles of treating diabetes. The principle of “diet control and proper exercise” is the basis for the treatment of diabetes, resulting in significant fluctuations in blood sugar and prolonged treatment. This has also created an opportunity for some unscrupulous businessmen to take advantage of the situation and victimize the elderly. Some unscrupulous vendors and unconscionable spokesmen make false claims about how good a certain drug or instrument is and how it can “cure diabetes” without diet control and physical exercise, just by using their products; and some so-called “internationally and nationally renowned experts” have developed a certain device that is so effective. Some so-called “internationally and nationally renowned experts” have developed a certain device, and the effect is so good that it has caused an international sensation; some “Voice of Health” radio and television programs employ many “trustees” to make so-called “feedback calls”, saying that a certain product can cure many diseases and mislead people. Some “Voice of Health” radio and television programs, employing many “trustees” to make so-called “feedback calls”, saying that a certain product can cure many diseases, misleading consumers to be deceived. I do not know, if a drug or a device can cure many diseases, the drug or the device can not cure the disease. We should not forget the “Tibetan secret drainage oil” and “Sanlu milk powder” incident. Therefore, you should keep your eyes open and go to a regular hospital to see a regular doctor.