Blood glucose GLU is the amount of glucose in the blood, GLU is the abbreviation for blood sugar. Blood glucose is generally standardized by venous plasma glucose. normal people have fasting blood glucose of 3.9-6.1mmol/L and venous blood glucose <7.8mmol/L 2 hours after meal. if fasting venous blood glucose >7mmol/L and venous blood glucose >11.1mmol/L 2 hours after meal, the diagnosis standard of diabetes is reached. Once diagnosed with diabetes, we should go to the endocrinology department for further examination of pancreatic islet function and choose a suitable blood glucose lowering plan under the guidance of doctors. First of all, we should control diet, strengthen exercise, maintain a regular life, do not eat high-calorie and high-sugar foods, eat more fresh vegetables and coarse fiber foods, and control the total amount of food eaten in a day. Secondly, we should insist on physical exercise after meals. Only when blood sugar is controlled to the standard can we avoid the occurrence and development of various complications and improve the quality of life to a certain extent.