Mouth fever tongue burning, may be a diet too spicy stimulating food, may also be the papillitis of the tongue or burning mouth syndrome. 1. Eating spicy and stimulating foods. When the diet is too spicy and stimulating food, it will make the tongue produce a “spicy” feeling, which is actually a kind of pain, the local blood circulation is accelerated, and the tongue is hot and painful. 2. Tongue papillitis. When the fungal infection or inflammation, external stimuli can cause inflammation of the papilla of the tongue, resulting in papillary swelling and redness, local congestion, due to inflammation and produce redness, swelling, heat and pain phenomenon. 3. Burning mouth syndrome. Due to psychological factors and menopause may appear burning mouth syndrome, manifested as mucosal tongue burning pain tongue sensory abnormalities. The mouth is hot, the tongue is hot, specific need to go to the hospital based on clinical manifestations and laboratory tests to confirm the diagnosis.