Gastric disease can be seen in the clinic as gastric yin deficiency, gastric yang deficiency, and cold evils that attack the stomach, and the tongue can also be seen as red tongue with little moss, teeth marks on the edge of the tongue, red tongue with yellow moss and cracks, and large moss with thick and greasy coating, and so on. Although gastric diseases are often reflected in the tongue, and different evidence will cause different changes in the tongue, but the specific identification needs to be based on the tongue and the accompanying symptoms and other comprehensive considerations, in order to achieve accurate regulation and treatment. Spleen and stomach are the foundation of the body, diet, emotion, external evils, etc. can damage the stomach, and when different symptoms occur, the tongue can also show different changes accordingly. For example, stomach yin insufficiency (insufficient yin fluid in the stomach) will show red tongue with little moss; stomach yang deficiency will show a chubby tongue with teeth marks on the side of the tongue; cold stagnation in the stomach and epigastric region will show a light tongue with moss that is white and moist; and gastric heat blazing will show a yellow tongue with red moss that is cracked and cracked, etc. If you have stomach discomfort, it is recommended to take prompt action. If you have any stomach discomfort, it is recommended to consult a doctor promptly.