If diabetic patients do not have diabetic nephropathy, long-term drinking soybean milk is generally not harmful. If combined with diabetic nephropathy, is not suitable for long-term drinking soybean milk, will increase the burden on the kidneys, aggravate the condition. Soybean milk is rich in vegetable protein, which is very easy to be digested and absorbed by the human body, and will not aggravate the burden on the stomach and intestines. Soybean milk is high in calcium, and diabetic patients can drink soybean milk for a long time to prevent osteoporosis. In addition, the impact of soybean milk on blood sugar is not big, so diabetic patients long-term drinking soybean milk is not harmful. But diabetic nephropathy patients are not suitable for long-term drink soybean milk, long-term drink soybean milk or intake of too much protein will increase the burden on the kidneys. It is recommended to eat a balanced diet, more vegetables, coarse grains, good health. Therefore, diabetic patients without diabetic nephropathy, long-term drinking soybean milk is not harmful. If the patient is diabetic nephropathy is not suitable to drink soy milk for a long time. Diabetic patients should monitor their blood sugar regularly and take treatment under the guidance of doctors.