The efficacy of hypoglycemic vegetables are: 1, bitter melon, bitter melon is similar to insulin substances, is the first choice for lowering blood sugar, in addition to the bitter melon contains a large amount of cellulose, weight loss effect. 2, onion, onion contains substances to promote the synthesis of insulin, but also to clean up the cholesterol and triglyceride substances in the lowering of sugar at the same time as reducing the efficacy of atherosclerosis. 3, winter melon, winter melon contains a large number of substances to promote the secretion of insulin, effective in preventing diabetic retinopathy. Winter melon, winter melon contains a large number of substances to promote insulin secretion, effective prevention of diabetic retinopathy. There are sugar-lowering effect of vegetables and spinach, pumpkin, celery, broccoli, lotus root, leeks, yam, lentils, cucumber, lettuce and so on.