There are teeth marks on the tongue, mostly related to water-dampness, but also some tongue is light red and tender, the tongue is not big and there are slight teeth marks on the side of the tongue, which is related to spleen deficiency, qi deficiency and dampness-heat-phlegm and turbidity etc. The main reason is that the tongue is fat and thick, and some patients have teeth marks on the tongue. 1. Water-dampness is prevalent within the body: for those who have heavy dampness as the main reason, the tongue is thick and plump, and some patients have teeth marks on the tongue. This is because of the deficiency of yang in the body, which is unable to warm up the water and liquid, resulting in the metabolism of the water and liquid being out of order, or because of the invasion of cold and dampness into the human body, which is seen as a tongue with teeth marks on the tongue. 2. Spleen or qi deficiency: Spleen or qi deficiency can also cause teeth marks on the tongue, which is light red and tender. 3. Damp-heat phlegm: this is a real disease, mainly manifested as the tongue red, swollen and full of mouth, mostly seen in people who drink alcohol, like to eat fat, sweet and thick flavors, damp-heat evil obstruction, you will also see the tongue with teeth marks. Tongue with teeth marks, must promptly go to the hospital, under the advice of the doctor for appropriate treatment and regulation, not self-medication, so as not to delay the condition.