Tongue red and thin Chinese medicine is “tongue red and thin”, generally due to long-term illness damage lung yin or overwork depletion of kidney yin, overthinking depletion of heart yin, as well as over-eating spicy and stimulating food, depletion of gastric yin, resulting in yin deficiency and fire (the body of the yin essence loss, the emergence of hyperactive fire) the formation of the tongue. 1. Lung yin deficiency (insufficient yin in the lungs): prolonged illness and prolonged delay depletes lung yin and leads to yin deficiency and fire, which is characterized by a red tongue with thin moss, accompanied by a cough with little phlegm, a dry mouth and thirst, and a fine pulse (a pulse that becomes narrower and finer and quicker in rate), among other symptoms. 2. Kidney yin deficiency: excessive indoctrination or over-exertion in the bedroom damages the kidney yin, resulting in yin deficiency and exuberant fire. Symptoms include red tongue with thin moss, accompanied by lumbar and knee soreness, tinnitus, forgetfulness, insomnia and dreaminess. 3. Deficiency of stomach yin: dietary favoritism of spicy, greasy and stimulating food, the long-term depletion of stomach yin, resulting in stomach yin deficiency and fire, symptoms such as red tongue with thin coating, accompanied by burning pain in the stomach, dry mouth, thirst and excessive drinking and other symptoms. 4. Heart yin deficiency: ordinary overthinking, emotional upset (emotional upset), staying up all night and other reasons for long-term depletion of the heart yin, resulting in heart yin deficiency, can also be seen in the symptoms of thin red tongue, accompanied by heartburn and impatience, insomnia and excessive dreaming, mouth and tongue sores and other symptoms. The red tongue with thin coating is generally due to heart yin deficiency, lung yin deficiency, stomach yin deficiency, kidney yin deficiency and other reasons, but also can not rule out other factors caused by. It is recommended to consult a doctor in time, under the guidance of the doctor’s diagnosis and treatment with medication, do not take medication on your own to delay the condition.