Red tongue with teeth marks, Chinese medicine believes that red tongue suggests heat evidence in the body, and teeth marks tongue may be heavy dampness, modern medicine believes that it may be related to the following diseases: 1, tongue inflammation, due to inflammation of the intrinsic layer of blood vessels expansion, hyperplasia, congestion, resulting in increased blood flow rate, so make the tongue red. 2, atrophy degeneration of mucosa and minor salivary glands, filiform papillae atrophy, bacteriophageal papillae atrophy appear mirror tongue, such as dry syndrome, erythema, etc. 3, inflammation of the tongue microvasculature, directly affecting the nutrient supply of the papillary mucosa, causing pathological changes such as degeneration, atrophy and necrosis of tissue cells, resulting in thinning and drying of the tongue mucosa, exposure of submucosal vessels, and redness. 4, tooth marks and tongue tissue, connective tissue hyperplasia, and tissue edema or vascular and lymphatic reflux disorders and other factors. 5, with vitamin deficiency, uncontrolled diabetes 5.It may be related to vitamin deficiency, uncontrolled diabetes mellitus, chronic nephritis uremia, and hypothyroidism. 6.It may be related to general malnutrition, atrophy of tongue muscle and mucosa.