The tongue of a person with Liver and Kidney Yin deficiency usually shows a red tongue with no or little moss. Liver and Kidney Yin deficiency, also known as Liver and Kidney Deficiency, refers to a condition in which both Liver Yin and Kidney Yin are deficient. Liver yin and kidney yin nourish each other. Kidney yin deficiency can lead to liver yin deficiency, and liver yin deficiency can also lead to kidney yin deficiency. The occurrence of liver and kidney yin deficiency is mostly related to internal injuries of emotions and feelings, indolence in sexual intercourse, prolonged illnesses and warm diseases that injure the yin, and the image of the tongue is the image composed of the color and shape of the tongue and the tongue moss, because of liver and kidney yin deficiency (i.e., yin-liquid deficit of the liver and kidneys) there is no way to control the yang, thus the manifestation of the internal disturbance of the heat of the deficiency, so it may be red tongue, and the fluid is not above bearing, then the moss is seen to be absent or scarce moss. It should be noted that tongue diagnosis is only one of the four diagnostics of traditional Chinese medicine, can not be diagnosed only through the tongue, for the liver and kidney yin deficiency, clinical also mainly to dizziness, tinnitus, coercive and rib distension and pain, lumbar and knee soreness and weakness, spermatorrhea or menstrual bleeding as the main characteristics. If symptoms of liver and kidney yin deficiency appear, it is recommended to consult a doctor for scientific treatment under the guidance of a doctor.