Burning mouth syndrome manifests as burning pain in the tongue, and may also manifest as numbness, tingling, dullness of taste and other sensory abnormalities. 1. Burning mouth syndrome is mainly in the tongue as the site of onset, followed by the edge of the tongue, the back of the tongue and the tip of the tongue, mucosal burning pain is the main manifestation of the complex etiology, mental factors play a prominent role, in addition to burning pain, can also be manifested as a dull ache. 2. Tongue pain is a time rhythmic change of early and late, excessive talking, eating and drinking dry food, aggravated when resting, working, eating, distracted by no pain aggravation or reduction. The oral cavity may be accompanied by dry mouth, tongue papilla atrophy, mucosal congestion and redness, localized edema, may be accompanied by insomnia, fatigue, nervousness and other systemic symptoms. At present, clinical treatment is mainly based on removing local irritating factors and psychotherapy. Specific need to comply with medical advice.