In diabetic patients with medication, fasting blood glucose control is usually required to be between 4.4 and 7.0 mmol/L, and non-fasting blood glucose control is below 10.0 mmol/L. Specific blood glucose control standards vary on an individual basis. Diabetes mellitus is a metabolic disease characterized by chronic elevation of blood glucose, which generally requires a combination of diet, exercise, and medication to control blood glucose. When diabetic patients control their blood glucose within the above standard range, they can alleviate the symptoms of diabetes and delay the development of diabetic complications. Diabetic patients should choose a low-salt, low-fat and low-sugar diet in their daily life, eat more fresh vegetables and fruits with low sugar content, together with moderate aerobic exercise, such as jogging, swimming, jumping rope, etc., which can help patients control their blood glucose. If a diabetic patient’s blood glucose is still poorly controlled under the treatment of diet, exercise and medication, the patient should consult a specialist in a timely manner and adjust the dosage of medication or change the medication as prescribed by the doctor.