Onions eaten raw can not lower blood sugar. Onion as a vegetable, the main component is water, which contains vitamins, proteins and other ingredients can effectively replenish the body’s daily needs, but onions do not have the role of lowering blood glucose, should be through dietary control, exercise therapy, medication and other methods to lower blood sugar. 1. Dietary control: you need to control the total calories, rational distribution of nutrients, ensure the intake of carbohydrates, you can eat more food rich in dietary fiber. 2. Exercise therapy: On the basis of dietary control, exercise therapy can be carried out for 150 minutes of moderate-intensity aerobic exercise per week, such as jogging, swimming and so on. 3. medication: you need to take glucose-lowering drugs regularly under the guidance of a doctor, usually pay attention to monitoring blood glucose, assess the effect of glucose-lowering, and adjust the medication if necessary. Onions eaten raw can not play a role in lowering the effect of blood sugar, elevated blood sugar should be under the guidance of a doctor to carry out scientific treatment.