Different diabetic conditions can lead to different symptoms on the tongue, mainly manifested as follows: First, the tongue surface is red, early diabetic patients have a red tongue because there is internal heat in the body, at this time you can eat some food that can help clear heat and detoxify the body, such as lotus seeds, bitter melon. Second, the tongue is dry. If the blood sugar of diabetic patients is high, the osmotic pressure will rise, which will cause the fluid inside the tongue to infiltrate back into the blood vessels and cause the tongue to be dry, so it is best for patients to measure their blood sugar more often and seek the guidance of their doctors to adjust the treatment plan. You can eat more bitter melon, celery and other vegetable foods. Third, thick tongue moss, thick tongue moss is the performance of unsatisfactory blood sugar control, the tongue looks like coated with a layer of pulp, 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 between the two meals to add a meal based on vegetables. Fourth, the tongue dark purple. If a diabetic patient’s tongue appears dark purple, we should pay attention, which indicates that diabetes has developed to a more serious degree, may need to seek medical attention in time to avoid delaying treatment.