When blood sugar is high, you should go to the hospital in time to clarify whether it is diabetes. Then under the doctor’s guidance, blood sugar can be controlled comprehensively through reasonable diet, proper exercise and medication. 1. Diet: Daily should eat less food with high sugar content, such as candy, cake, chocolate, etc.; steamed bread, noodles and other foods with high starch content should also be eaten as little as possible; in addition, high-calorie, high-fat, high-salt food, such as fried chicken, salted eggs, pickles, etc. should also try to avoid excessive intake. Three meals a day should be nutritionally balanced, eat more light food. 2. Exercise: People with high blood sugar should keep exercising, such as walking, running, swimming, yoga, jumping rope, playing ball games, etc., and maintain a certain amount of exercise every day. 3. Drugs: If necessary, appropriate hypoglycemic drugs should be selected under the guidance of a doctor, commonly used drugs include metformin, glibenclamide, insulin and so on. During the medication period, you should strictly follow the doctor’s instructions, pay attention to monitoring blood glucose, regular review, and avoid blindly stopping and reducing the medication. In conclusion, patients with high blood sugar should go to the hospital in time and make personalized glucose-lowering plan under the doctor’s guidance, while developing good living habits.