Red tongue with red dots may be caused by diseases such as dorsal tongue papillae hyperplasia, herpes, mouth ulcers, and lingual inflammation. 1. Hyperplasia of the dorsal papilla of the tongue: mainly due to eating too hot, long-term consumption of dry and hard food, resulting in the appearance of red tongue with red dots, is one of the manifestations of inflammation and swelling of the dorsal papilla of the tongue. 2. Herpes: mainly caused by human herpes virus infection of a class of skin diseases, lesions occurring in the skin and mucous membrane junction, the initial local itching, redness and burning, the emergence of dense groups of large and small blisters, oozing, vesicles after the break. 3. Mouth ulcers: If affected by infection, endocrine changes, environment, genetics, immunity, food allergies, stress and other factors, patients may appear red tongue with red dots, most mouth ulcers are round or oval, the pain will be aggravated by the stimulation. 4. Tongue inflammation: If affected by malnutrition, anemia, fungal infections, endocrine disorders and other factors, the patient will appear tongue red with red dots, accompanied by tongue congestion, redness, swelling, pain and other symptoms. It is recommended that patients go to the regular hospital in time, according to the specific conditions, targeted treatment.