Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia. Hyperglycemia, in turn, is caused by defective insulin secretion or impairment of its biological action, or both. The long-term presence of hyperglycemia in diabetes leads to chronic damage and dysfunction of various tissues, especially the eyes, kidneys, heart, blood vessels and nerves. So what should diabetic patients pay attention to in their daily lives? First, how to achieve a reasonable diet for diabetic patients? 1, comply with the prescribed meal times, do not miss meals or miss meals. 2.Eat a variety of different foods to obtain the necessary vitamins and minerals. 3, eat less fatty foods, such as cooking oil, nuts, fatty meat, dairy. 4.Limit foods high in sugar. 5.Eat more foods with high fiber or coarse grains. 6.Control the amount of salt in your diet to control blood pressure. 7.Know the food composition. 8.Record the blood glucose value before and after meals for a period of time as much as possible to determine the effect of diet on blood glucose. 9. Pay attention to the balance of exercise and diet, not too much or too little. What should I pay attention to when I eat out? First of all, 20-30 minutes before the meal first take a good glucose-lowering drugs, when ordering food should try not to choose fried, oil explosion, candied, smoked dishes, try to pick steamed, boiled, mixed, stewed dishes, the main food can choose rice, steamed buns or congee, do not choose fried rice, fried noodles or fried, high-sugar snacks, drinks optional tea, mineral water, soda, do not drink sweet drinks. How to exercise for diabetic patients? Patients with diabetes can participate in appropriate exercise, but the exercise plan should be consulted with your primary care physician, especially for patients over 40 years old and those with a history of diabetes for more than 10 years. This is because some exercises may aggravate eye, kidney and nerve lesions. When exercising, blood pressure in diabetics may rise higher than normal. In addition, the risk of heart disease increases. If any of the symptoms of chest tightness, abnormal vertigo, blurred vision, or nausea occur, stop exercising and seek immediate medical attention. When the blood sugar is higher than 240mg/dl (13.3mmol/L), ketone bodies can appear, and you should bring a diabetic card to let others know you have diabetes. Fourth, is it possible to drink alcohol? People with diabetes can only drink alcohol in small amounts if their blood sugar is under good control. However, if you are injecting insulin or taking glucose-lowering drugs, you should not drink alcohol when you are fasting, otherwise you will have hypoglycemic reaction.