Some patients often feel pain in the tongue subjectively, but the doctor does not find any abnormality in the tongue and the mobility of the tongue is normal, this condition is burning mouth syndrome. In addition to tongue pain, other oral mucosa may also have burning-like pain. The disease is common in clinical practice and it may have the following etiologies: (a) Metabolic and endocrine disorders, vitamin deficiency, especially in menopausal women. (b) For various reasons, the patient has a foreign body feeling in the pharynx, which makes the patient suspect the existence of a “tumor” in the pharynx, or occasionally see the posterior part of his tongue hypertrophy, resulting in fear, followed by discomfort or pain in the tongue, and in order to observe the condition, the patient often stretches his tongue frequently to look in the mirror, and this activity makes the root of the tongue fatigue, thus aggravating the patient’s symptoms. (C) local tartar, sharp tooth tips, etc. stimulation. Many patients think that burning mouth syndrome is a simple oral disorder, in fact, its etiology is divided into three aspects: local stimulation, systemic diseases and psychosomatic factors. Local oral factors include mechanical stimulation from rotten roots, crowns, fillings or dentures, dental calculus and excessive alcohol and tobacco use. Systemic factors include endocrine disorders in women during menopause, dry syndrome, hypertension, diabetes, malnutrition, anemia, vitamin deficiency and long-term use of various drugs. The treatment of this disease mainly lies in the patient to put down the burden of thought and maintain an optimistic state of mind.