Yellowish greasiness at the root of the tongue is not kidney bad. It is considered that the kidney is invaded by dampness and heat. Regarding the positioning of internal organs in tongue diagnosis, Chinese medicine believes that the tip of the tongue belongs to the heart and lungs, and the root of the tongue belongs to the kidneys. The yellowish and greasy tongue only shows that the kidney is invaded by dampness and heat, but it has not developed to the point that the kidney function is impaired. Therefore, the tongue root is yellow and greasy, does not mean that the kidney is not good. The cause of yellowish greasy tongue is mainly due to overeating, gluttony of cold drinks and greasy food, which damages the spleen yang, leading to the spleen’s reduced ability to transport water and dampness, and the dampness in the body gradually collects and invades the kidneys, which is not treated in time, and then gradually turns into heat, and then yellowish greasy tongue occurs. If you need to treat the disease, please use medication under the guidance of a doctor. If the symptoms are mild, you can drink water with zejiao, and if the symptoms are more serious, you can take Chinese medicines such as Si Miao Pill. The main effect of this product is to clear the lower jiao dampness and heat (dampness and heat evil invasion of the intestines, bladder, Yin, lower limbs, etc.), the root of the tongue is not yellow and greasy patients should be used with caution, the use of the identification of the product will not usually have adverse reactions, the best not to eat spicy during the drug.