Lingual papillitis includes filiform papillitis, bacterial papillitis, contour papillitis and lobular papillitis, except for filiform papillitis which is atrophic damage, the rest manifest as congestion, redness, swelling and pain. Etiology: local factors include sharp tooth tips, calculus, poor restorations, eating, traumatic stimuli such as spicy or too hot food; systemic factors: malnutrition, anemia, hematological diseases, endocrine disorders, vitamin deficiency, antibiotic abuse, etc. Note: foliaceous papillae are located at the site of tongue tumor, and need to be distinguished from tumors, the latter manifesting as precancerous lesions or long-term adverse stimuli, often accompanied by ulcers, localized on palpation It is often accompanied by ulceration, hard texture on palpation, ulcerated surface does not heal for a long time, and pathological section has typical tumor performance. For treatment, systemic treatment such as correction of anemia and vitamin supplementation, local antibacterial rinse, sharpening of tooth tips, periodontal cleaning, etc. to remove local bad stimuli, and oral antibiotics when inflammation is obvious. Diet, reduce spicy and stimulating food, and those who have the habit of tongue extension should quit.