Different diabetic conditions will lead to different symptoms of the tongue, mainly manifested as follows: First, the tongue surface red, early diabetic patients tongue into red, because the body has internal heat, this time you can eat some can help clear heat and detoxification of food, such as lotus seed, bitter melon. Second, tongue dryness, diabetic patients with high blood sugar, osmotic pressure will rise, which will lead to the tongue inside the liquid penetration back into the blood vessels triggered by tongue dryness, this time the patient is best to measure the blood glucose, and seek the guidance of the doctor to make adjustments to the treatment program. You can eat more bitter melon, celery and other vegetables. Third, tongue thick, tongue thick is the performance of blood sugar control is not ideal, the tongue looks like coated with a layer of pulp like things, this is the performance of thick moss, may be caused by phlegm and dampness in the body, this time it is best to control the diet, reduce the intake of staple foods, you can add a meal in the two meals to the vegetable-based meal. Fourth, the tongue dark purple. If the tongue of diabetic patients appear to appear deep purple, we should pay attention to, which indicates that diabetes has developed to a more serious degree, may need to consult a doctor in a timely manner, so as not to delay the treatment.