Thick tongue and red spots may be caused by long-term poor oral hygiene or by fire in the organism. If you do not brush your teeth and rinse your mouth carefully for a long time, a large amount of bacteria and food residues will accumulate on the surface of the tongue, which will lead to a white and thick tongue, accompanied by oral odor, because there is a large amount of bacteria on the surface of the tongue, which will stimulate the inflammation of the tongue papillae and cause lingual papillitis, which will lead to inflammation of the bacteriophageal papillae of the tongue. This causes a strawberry-like red protrusion on the surface of the tongue. When the body is on fire, there will also be thick tongue coating and red dots on the surface of the tongue, mainly in long-term tension, anxiety, sulking or irritable people, such people have strong liver fire, fire rose to the inside of the mouth, it will cause a very thick tongue coating and red dots on the surface of the tongue. In addition, due to long-term preference for greasy, indigestible food, resulting in long-term food accumulation, food stays in the stomach for too long, causing stomach fire, will also lead to a very thick tongue moss and red dots on the surface of the tongue.