Painful red spots on the tongue may be related to improper diet, papillitis of the tongue and other factors, according to the specific condition, choose the appropriate treatment. 1. Improper diet: If you eat too much spicy and stimulating food, it will stimulate the epidermal mucous membrane of the tongue, resulting in red spots on the tongue and causing pain. You should pay attention to maintaining a light diet and avoiding spicy, cold or too hot food. 2. Tongue papillitis: If you are used to licking your teeth with your tongue, it will stimulate the epidermis of the tongue and lead to tongue papillitis, which can be congested, red and swollen and accompanied by pain and other sensations, you can use ciprofloxacin gargle, cotrimoxazole gargle and gargle with amoxicillin capsule, roxithromycin capsule and other medications under the advice of your doctor. 3. Filiform papillae detachment: If the body has fever, it can cause the tongue filiform papillae detachment, which can cause the tongue to appear red spots and pain, you can choose hairy fruit rue base nitrate tablets, compound ferric ammonium citrate syrup and other medications under the advice of the doctor. If the red spots and pain on the tongue can not be effectively relieved, go to the hospital in time for examination, symptomatic treatment, the use of drugs need to follow the doctor’s instructions.