Red dots on the tongue may be stomatitis, papillitis and other diseases, but also may be related to dietary factors. 1. stomatitis, if you don’t pay attention to your oral hygiene in normal life, oral inflammation, inflammation stimulation of the oral mucosa, there may be red dots on the tongue. 2. papillitis of the tongue, due to the papilla of the tongue by local stimulation or infection may lead to papillitis of the tongue, the patient will appear more obvious tongue redness, smooth, at the same time there may be red tongue coating symptoms. 3. Dietary factors, if you do not pay attention to personal diet, often eat spicy and stimulating food, may lead to local tissue abnormalities, so there will be red tongue coating symptoms. Usually need to pay more attention to rest, do a good job of personal health care, if there is a disease need to consult a doctor.