If the tongue is more white and greasy after drinking medicines that nourish kidney yin, it may be caused by improper diet during the medication period, or the medication is too nourishing. If you take kidney yin tonic medication in excess of the use of fat, sweet, thick, cold and stimulating food, may affect the spleen and stomach function, resulting in water and dampness, also appeared in the tongue coating white greasy. The drugs that tonify the kidney yin, such as ripened rhubarb and cornelian cherry meat, are nourishing and greasy products, and if the dose of the drug is too large and the time of the drug is too long and other factors, it may also affect the spleen and stomach transportation, resulting in the stagnation of water and dampness in the body, and the emergence of the tongue is greasy. Patients with greasy tongue can take coix seed, Chen Pi, Poria and other spleen-healthy, dampness-eliminating medicines in moderation under the guidance of a doctor. It is recommended that the patient under the guidance of the doctor to deal with the symptoms.